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M Alkalinity vs. P Alkalinity
M and S vs. Waitrose
M vs. M2
M13 Phage Vector vs. Yak
M16 Rifle vs. M4 Carbine
M2 Math vs. Math
M3 vs. nm3
M4V vs. MKV
M4V vs. MP4
M5 Dual vs. Sony Xperia M5
Ma Huaiyuan vs. Zhang Luming
MA vs. MBA
MAC Cloning vs. MAC Cloning
MAC Cloning vs. MAC Spoofing
Mac OS X 10.7 Lion vs. Windows 7
Mac vs. PC
Macaron vs. Macaroon
Macaroni vs. Pasta
Macaroni vs. Spaghetti
Macaw vs. Tungsten
Macaws vs. Parrots
MacBook Air vs. iPad 2
MacBook Air vs. MacBook Pro
MacBook Air vs. Surface Pro 3
MacBook vs. MacBook Pro
Mace vs. Pepper Spray
Maceration vs. Percolation
Machine Dependent Code Optimization vs. Machine Independent Code Optimization
Machine Repairs vs. Tools
Machinery vs. Plant
Machinist vs. Millwright
Macro Environment Analysis vs. Microenvironment Analysis
Macro Sociology vs. Micro Sociology
Macro vs. Micro
Macro vs. Microhabitat
Macroalgae vs. Microalgae
Macrocytic Anemia vs. Microcytic Anemia
Macroeconomics vs. Microeconomics
Macroevolution vs. Microevolution
Macroglia vs. Microglia
Macrolides vs. Tetracyclines
Macromolecule vs. Polymer
Macron vs. Mitterrand
Macronucleus vs. Micronucleus
Macronutrients vs. Micronutrients
Macrophage vs. Monocyte
Macrophages vs. Neutrophils
Macroprolactin vs. Prolactin
Macroscopic Properties vs. Microscopic Properties
Macroscopic vs. Microscopic
Macrostate vs. Microstate
Macrovascular vs. Microvascular
Macular Degeneration Dry vs. Macular Degeneration Wet
Macular Degeneration vs. Macular Edema
Macular Rash vs. Papular Rash
Madam vs. Madame
Madame vs. Mademoiselle
Made From vs. Made Of
Made vs. Make
Maestro Card vs. Visa Card
Maestro vs. Master
Mafia vs. Mob
Magazine vs. Newspaper
Mage vs. Wizard
Magento vs. Opencart
Magic vs. Miracle
Magnesia vs. Magnesium
Magnesium Atom vs. Magnesium Ion
Magnesium Bisglycinate vs. Magnesium Glycinate
Magnesium Chloride vs. Magnesium Sulfate
Magnesium Citrate Supplement vs. Molecular Hydrogen
Magnesium Citrate vs. Magnesium Glycerinate
Magnesium Citrate vs. Magnesium Malate
Magnesium Citrate vs. Magnesium Orotate
Magnesium Citrate vs. Magnesium Oxide
Magnesium Citrate vs. Molecular Magnesium
Magnesium Dihydrate vs. Magnesium Trihydrate
Magnesium Gluconate vs. Magnesium Glycinate
Magnesium Glycinate vs. Magnesium Oxide
Magnesium Hydroxide vs. Magnesium Oxide
Magnesium Oxide vs. Titanium Oxide
Magnesium vs. Magnesium Citrate
Magnesium vs. Magnesium Glycinate
Magnesium vs. Magnesium Oxide
Magnesium vs. Manganese
Magnesium vs. Zinc
Magnetars vs. Pulsars
Magnetic Disk vs. Magnetic Tape
Magnetic Field vs. Magnetic Flux
Magnetic Field vs. Magnetic Force
Magnetic Flux vs. Magnetic Flux Density
Magnetic Materials vs. Nonmagnetic Materials
Magnetic Meridian vs. True Meridian
Magnetic North vs. True North
Magnetic Permeability vs. Magnetic Susceptibility
Magnetic Quantum Number vs. Spin Quantum Number
Magnetostriction vs. Piezoelectric Effect
Magnification vs. Resolution
Magnification vs. Resolving Power
Mah vs. Wh
Mahabharata vs. Ramayana
Maharashtra vs. Rajasthan
Maharatna Status for PSE vs. Navratna Status for PSE
Mahatma Gandhi vs. Nelson Mandela
Mahayana Buddhism vs. Theravada Buddhism
Mahayana vs. Theravada
Mahayana vs. Vajrayana
Mahindra Scorpio VLX AT vs. Tata Safari Dicor 2.2 VTT
Maid of Honor vs. Matron of Honor
Maida vs. Wheat Flour
Main Clause vs. Subordinate Clause
Maintain vs. Sustain
Major 3rd vs. Minor 3rd
Major Histocompatibility Antigens vs. Minor Histocompatibility Antigens
Major Scales vs. Minor Scales
Majority Judgment in ICJ's Application of the Convention on the Prevention and Punishment of the Crime of Genocide in the Gaza Strip South Africa v. Israel vs. Minority Judgment
Majority Judgment on Crime of Genocide in Israel vs. Minority Judgment on Genocide in Israel
Majority Judgment vs. Minority Judgment
Majority vs. Plurality
Majority vs. Unanimity
Make Out vs. Makeup
Make vs. Model
Makeup Fixer vs. Primer
Maki vs. Sushi
Making Love vs. Sex
Malabsorption vs. Maldigestion
Malamute vs. Siberian Husky
Malaria vs. Typhoid
Malaria vs. West Nile Virus
Malaria vs. Yellow Fever
Malathion vs. Parathion
Malayalam vs. Tamil
Maldives vs. Sri Lanka
Maleic Acid vs. Malic Acid
Mali-400MP GPU vs. Tegra 2
Mali-400MP vs. PowerVR SGX543MP2
Malic Acid vs. Sugar
Malicious Flash Drive vs. Remote Access Trojan
Malignant Hyperthermia vs. Neuroleptic Malignant Syndrome
Malignant Hyperthermia vs. Serotonin Syndrome
Mall vs. Outlet
Mall vs. Shopping Center
Malnutrition vs. Undernutrition
Malonic Acid vs. Succinic Acid
Malpighian Tubules vs. Nephridia
Malpractice vs. Negligence
Malt Shake vs. Shake
Maltese vs. Shih Tzu
Maltose vs. Trehalose
Malvern vs. Sympatec
Malware vs. Virus
Mamata Banerjee vs. Narendra Modi
Mammal vs. Marsupial
Mammal vs. Reptile
Mammalian Cell Culture vs. Microbial Cell Culture
Mammoth vs. Mastodon
Man-Made Disaster vs. Natural Disaster
Man vs. Monkey
Man vs. Woman
Manage vs. Succeed
Managed Server vs. Managed Services
Managed Switch vs. Smart Switch
Manager vs. Supervisor
Manager vs. Vice President
Managerial Control vs. Technical
Managerial Control vs. Technical Control
Managerial Controls vs. Operational Controls
Managerial Functions vs. Managerial Roles
Managing Security vs. Protecting Data
Manchester Terrier vs. Miniature Pinscher
Mandarin Orange vs. Orange
Mandarin vs. Orange
Mandarin vs. Tangerine
Mandatory Access Control vs. Role-Based Access Control
Mandibular Canine vs. Maxillary
Mandibular Molars vs. Maxillary
Mandolin vs. Ukulele
Manet vs. Monet
Manganese Dioxide vs. Manganese Oxide
Mango vs. Windows Phone 7
Mango WP 7.5 vs. Windows Phone Tango
Mania vs. Manic
Manicure vs. Pedicure
Manifestation vs. Visualization
Manipulation vs. Persuasion
Manjaro vs. Windows 11
Mann-Whitney U Test vs. T-Test
Manner vs. Method
Mannerism vs. Renaissance
Mannitol vs. Sorbitol
Manometer vs. Piezometer
Manslaughter vs. Murder
Manslaughter vs. Second Degree Murder
Manta Ray vs. Stingray
Mantra vs. Sloka
Manufacture vs. Product
Manufactured Homes vs. Modular Homes
Manufacturer's Guarantee vs. Warranty
Manufacturing vs. Production
Manufacturing vs. Service
Manure vs. Organic Matter
Many vs. More
Many vs. Much
Maoism vs. Marxism
Maoist vs. Marxism
Maoist vs. Naxalite
Map Pro vs. Propane
Map vs. Map Pro
Map2 vs. Neun
Mapai vs. Mapam
Maple Wood vs. Rosewood
MAPP Gas vs. Map Pro
MAPP Gas vs. Propane
Marathon Runner vs. Sprinter
Marble Tiles vs. Porcelain Tiles
Marcasite vs. Pyrite
Marchantia vs. Riccia
Margarine vs. Shortening
Margay vs. Ocelot
Margherita Pizza vs. Pineapple on Pizza
Margin vs. Markup
Margin vs. Padding
Margin vs. Profit
Marginal Cost vs. Opportunity Cost
Marginal Utility vs. Total Utility
Maria Sharapova vs. Sania Mirza
Marijuana vs. Weed
Marimba vs. Xylophone
Marines vs. Navy
Marines vs. Navy SEALs
Marines vs. United States Army
Mario vs. Onigiri
Marissa Mayer vs. Sheryl Sandberg
Marius vs. Philipp
Mark of the Ninja vs. Thief
Mark vs. Matthew
Market Development vs. Market Penetration
Market Development vs. Product Development
Market Economies vs. Market Societies
Market Economy vs. Mixed Economy
Market Economy vs. Planned Economy
Market Intelligence vs. Market Research
Market Research vs. Marketing Research
Market Segmentation vs. Target Market
Market vs. Marketing
Marketing Concept vs. Selling Concept
Marketing Mix vs. Product Mix
Marketing Offer vs. Value Proposition
Marketing Plan vs. Marketing Strategy
Marketing vs. Merchandising
Marketing vs. Promotion
Marketing vs. Public Relations
Marketing vs. Sales
Marketing vs. Selling
Marketplace vs. Marketspace
Marlin vs. Sailfish
Marlin vs. Swordfish
Marmalade vs. Preserves
Marmite vs. Vegemite
Marriage Certificate vs. Marriage License
Marriage vs. Wedding
Mars vs. Titan
Marsh vs. Swamp
Marsupial vs. Placental
Marsupial vs. Rodent
Marsupials vs. Monotremes
Martyrdom vs. Suicide
Maruti Alto vs. Maruti Alto K10
Marx vs. Søren Kierkegaard
Marx vs. Weber
Marxian Economic Sociology vs. Neo-Marxian Economic Sociology
Marxism vs. Neo-Marxism
Marxism vs. Socialism
Mask vs. Masque
Masking vs. Tokenization
Maslow vs. Roger
Maslow vs. Rogers
Maslow's Theory vs. Roger's Theory
Mass Customization vs. Mass Production
Mass Density vs. Optical Density
Mass Fraction vs. Mole Fraction
Mass Incineration vs. Water Wall Incineration of MSW
Mass Marketing vs. Niche Marketing
Mass Percent vs. Percent Composition
Mass Selection vs. Pure Line Selection
Mass Tourism vs. Venetians
Mass vs. Matter
Mass vs. Molar Mass
Mass vs. Volume
Mass vs. Weight
Massage Therapist vs. Masseuse
Massive Pulmonary Embolism vs. Submassive Pulmonary Embolism
Mastaba vs. Pyramid
Master Data vs. Transaction Data
Master in Computer Science vs. Master in Information Technology
Master Quest vs. Ocarina of Time
Master vs. Slave
MasterCard vs. Visa
Mastercard vs. Visa Card
Masters by Coursework vs. Masters by Research
Masters vs. PhD
Masters vs. Teachers
Mastigomycotina vs. Zygomycota
Masturbation vs. Sodomy
Mat vs. Rug
Match.com vs. eHarmony
Materia Alba vs. Plaque
Material Culture vs. Nonmaterial Culture
Material Mistake vs. Non-Material Mistake
Materialism vs. Mentalism
Materiality vs. Performance Materiality
Materialized View vs. View
Maternal DNA Testing vs. Paternal DNA Testing
Maternal Effects vs. Sex Linkage
Maternal vs. Paternal
Mathematica vs. Wolfram Alpha
Mathematics vs. Numeracy
Mathematics vs. Statistics
Maths vs. Numeracy
Matriarchy vs. Patriarchy
Matte Paint vs. Silk
Max Payne 2 vs. Red Faction Guerrilla
Maxam-Gilbert Sequencing vs. Sanger Sequencing
Maximal Oppositions vs. Minimal Oppositions
Maximal Oppositions vs. Multiple O
Maximal Oppositions vs. Multiple Oppositions
Maximal vs. Maximum
Maximum Likelihood vs. Maximum Parsimony
May Be vs. Maybe
May Have vs. Might Have
May vs. May Be
May vs. Might
May vs. Must
May vs. Shall
Maybe vs. Perhaps
Mayo vs. Miracle Whip
Mazda 3 vs. Mazda Miata
MBA vs. Masters
MBA vs. MCA
MBA vs. MMS
MBA vs. MPA
MBA vs. MSc
MBA vs. PGDM
Mbappé vs. Messi
MBBS vs. MD
MBC vs. Mic
MBE vs. MBO
Mbps vs. Mbps
MCA vs. MSc IT
MCAS vs. Mastocytosis
McBurney's Point vs. Rovsing Sign
McCain vs. Obama
McDonald's vs. Red Robin
McDonald's vs. Subway
McDonald's vs. Wendy's
McKinsey Analysis vs. SWOT Analysis
McLaren vs. Scuderia Ferrari
MD5 vs. SHA-1
MDF Board vs. Plywood
MDF vs. Plywood
MDI vs. TDI
MDM vs. UTM
MDMA vs. Meth
MDR TB vs. XDR TB
MDT vs. Mist
Me vs. Mine
Me vs. Miss
Me vs. U
Me vs. You
Meals on Wheels vs. Project A
Mean Free Path vs. Pressure
Mean vs. Median
Mean vs. Mode
Mean vs. Standard Deviation
Meaning vs. Purpose
Measles vs. Mumps
Measles vs. Roseola
Measles vs. Rubella
Measles vs. Shingles
Measles vs. Smallpox
Measured Boot vs. Trusted Boot
Measures vs. Strategy
Meat vs. Meet
Meat vs. Poultry
Meatballs vs. Spaghetti
Mechanic Solidarity vs. Organic Solidarity
Mechanical Energy vs. Thermal Energy
Mechanical Pencils vs. Wooden Pencils
Mechanism of Action vs. Mode of Action
Mechanoreceptors vs. Proprioceptors
Media vs. Medium
Media vs. Press
Median vs. Mode
Mediastinum vs. Pericardial Cavity
Mediation vs. Moderation
Mediation vs. Negotiation
Mediator vs. Moderator
Medibank vs. Medicare
Medic vs. Paramedic
Medicaid vs. Medicare
Medical Asepsis vs. Surgical Asepsis
Medical Assistant vs. Nurse
Medical Science vs. Medicine
Medical vs. Medicare
Medicare vs. Medicare Advantage
Medicare vs. Obamacare
Medicare vs. Private Health Insurance
Medication vs. Medicine
Medicinal Chemistry vs. Pharmaceutical Chemistry
Medicine vs. Nursing
Medieval Ages vs. Middle Ages
Medieval Art vs. Renaissance Art
Medieval Art vs. Roman Art
Medieval Music vs. Renaissance Music
Medieval vs. Renaissance
Meditation vs. Mindfulness
Meditation vs. Prayer
Meditation vs. Sleep
Meditation vs. Yoga
Mediterranean Diet vs. Pescatarian Diet
Medium vs. Psychic
Mediums vs. Technique
Medulla Oblongata vs. Spinal Cord
Medulloblastoma vs. Neuroblastoma
Medusa vs. Polyp
MeeGo 1.2 vs. Symbian^3
Meerkat vs. Mongoose
Meet vs. Meet With
Meet vs. Met
Mega Millions vs. Powerball
Megabit vs. Megabyte
Megakaryocyte vs. Platelet
Megaloblastic Anemia vs. Pernicious Anemia
Megapixel vs. Optical Zoom
Megasporogenesis vs. Microsporogenesis
Meigs Syndrome vs. Pseudo Meigs Syndrome
Meindl vs. Salomon
Meiosis I vs. Meiosis II
Meiosis vs. Mitosis
Meissner's Corpuscles vs. Pacinian Corpuscles
MEK vs. Xylene
Melamine Formaldehyde vs. Urea Formaldehyde
Melancholy vs. Poignant
Melanin vs. Melatonin
Melanoma vs. Skin Cancer
Melatonin vs. Serotonin
Melbourne vs. Sydney
Melody vs. Rhythm
Membrane Potential vs. Nernst Potential
Membranous Organelles vs. Nonmembranous Organelles
Memcached vs. Redis
Memo vs. Report
Memorial Day vs. Veterans Day
Memorial vs. Monument
Memory B Cells vs. Memory T Cells
Memory Cells vs. Plasma Cells
Memory Dumps vs. Syslog Server
Memory vs. Storage
Men Suit Coat vs. Women's Suit Coat
Men vs. Women
MEN1 vs. MEN2
Menactra vs. Menveo
Menaquinone vs. Phylloquinone
Mendeleev Periodic Table vs. Moseley Periodic Table
Mendeleev vs. Modern Periodic Table
Mendelian Inheritance vs. Non-Mendelian Inheritance
Mendel's First Law vs. Mendel's Second Law
Meniere's Disease vs. Vertigo
Meniere's Disease vs. Vestibular Neuritis
Meningitis vs. Meningococcal
Meningitis vs. Meningoencephalitis
Meningocele vs. Meningomyelocele
Menkes Disease vs. Wilson's Disease
Menopause vs. Perimenopause
Men's Football vs. Women's Football
Men's Shoe Size vs. Women's Shoe Size
Menstrual Blood vs. Regular Blood
Menstrual Cycle vs. Ovarian Cycle
Menstrual Symptoms vs. Pregnancy Symptoms
Menstruation vs. Ovulation
Mental Disorder vs. Mental Illness
Mental Health vs. Mental Illness
Mentalism vs. Universal Grammar
Mentalism vs. Universal Grammar Theory
Menthol vs. Wintergreen
Mention vs. Refer
Mentor vs. Teacher
Mercalli Scale vs. Richter Scale
Merchandise Planning Department vs. Merchandising Department
Merchandise Planning vs. Supply Chain Planning
Merchandising Development vs. Merchandising Operation
Merchandising Development vs. Sales Development
Merchandising Operations vs. Retail Operations
Merchandising vs. Retail Operations
Mercuric vs. Mercurous
Mercurochrome vs. Merthiolate
Merge vs. Quick
Merge vs. Selection
Merger vs. Takeover
Meri vs. Teri
Meridians vs. Parallels
Meringue vs. Pavlova
Merino Wool vs. Wool
Meristematic Tissue vs. Permanent Tissue
Merlot vs. Shiraz
Mermaid vs. Siren
Mermaid vs. Trumpet
Mesa vs. Plateau
Mesenchymal Cells vs. Parenchyma
Mesenchymal Markers vs. Stem Cell Markers
Mesenchyme vs. Mesoderm
Mesentery vs. Omentum
Mesolithic vs. Paleolithic
Mesomeric Effect vs. Resonance
Mesons vs. Muons
Mesophiles vs. Thermophiles
Messenger vs. Prophet
Messi vs. Ronaldo
Meta Substitution vs. Ortho Para
Meta vs. Para-Aramid
Metabolic Acidosis vs. Metabolic Alkalosis
Metabolic Acidosis vs. Respiratory Acidosis
Metabolic Rate vs. Metabolism
Metabolomics vs. Metabonomics
Metabolomics vs. Proteomics
Metaboric Acid vs. Orthoboric Acid
Metacentric Chromosomes vs. Submetacentric Chromosomes
Metacentric Chromosomes vs. Telocentric Chromosomes
Metachromasia vs. Metachromatic
Metachronous vs. Synchronous
Metaethics vs. Normative Ethics
Metagenesis vs. Metamorphosis
Metagenomics vs. Metatranscriptomics
Metal-Activated Enzymes vs. Metalloenzymes
Metal Baseball Bats vs. Wood Baseball Bats
Metal Bat vs. Wooden Bat
Metal Carbonate vs. Metal Hydrogen Carbonate
Metal Carbonyls vs. Organometallic Compounds
Metal Ceramic vs. Zirconia
Metal Deficiency Defect vs. Metal Excess Defect
Metal Gear Solid 3: Snake Eater vs. Splinter Cell Chaos Theory
Metal Halide vs. Multivapor
Metal Oxides vs. Nonmetal Oxides
Metal vs. Punk
Metal vs. Rock
Metal vs. Semiconductor
Metal vs. Steel
Metallic Hydrogen vs. Molecular
Metallic Minerals vs. Nonmetallic Minerals
Metalloids vs. Metals
Metalloids vs. Transition Metals
Metallurgical Coal vs. Thermal Coal
Metals vs. Minerals
Metals vs. Nonmetals
Metals vs. Polymers
Metals vs. Transition Metals
Metamerism vs. Position Isomerism
Metamerism vs. Tautomerism
Metamodernism vs. Transmodernism
Metamorphic Rocks vs. Sedimentary Rocks
Metamorphosis vs. Molting
Metanephric Kidney vs. Pronephric Mesonephric
Metanephridia vs. Protonephridia
Metaphase vs. Prophase
Metaphor vs. Metonymy
Metaphor vs. Personification
Metaphor vs. Simile
Metaphor vs. Symbol
Metaphosphoric Acid vs. Ortho Pyro
Metaphysical Possibility vs. Physical Possibility
Metaphysics vs. Physics
Metastable vs. Stable
Metatarsalgia vs. Morton's Neuroma
Metatherian vs. Prototherian
Metathesis Reactions vs. Redox Reactions
Metaxylem vs. Protoxylem
Metazoa vs. Protozoa
Meteor vs. Meteorite
Meters Squared vs. Square Meters
Methadone vs. Suboxone
Methane vs. Methanol
Methane vs. Propane
Methanogens vs. Methanotrophs
Methionine vs. Selenomethionine
Method vs. Methodology
Method vs. Principle
Method vs. Process
Method vs. Strategy
Method vs. Study Design
Method vs. System
Method vs. Tactic
Method vs. Technique
Methodist vs. Presbyterian
Methodology vs. Methods
Methodology vs. Philosophy
Methodology vs. Study Design
Methods vs. Techniques
Methotrexate vs. Methotrexate Sodium
Methyl Chloride vs. Methylene Chloride
Methyl Group vs. Methylene Group
Methyl Nitrite vs. Nitromethane
Methyl Orange vs. Phenolphthalein
Methylated Spirit vs. Surgical Spirit
Methylated Spirits vs. Mineral Turpentine
Methylcobalamin vs. TMG
Methylene vs. Methylidene
Methylparaben vs. Propylparaben
Methylparaben vs. Sodium Methylparaben
Metonymy vs. Synecdoche
Metoprolol Succinate vs. Metoprolol Tartrate
Metric Ton vs. Ton
Metric vs. Standard
Metro Rail vs. Monorail
Metro vs. Subway
Metro vs. Train
Metropolitan Police vs. Scotland Yard
Mexican Cuisine vs. Spanish Cuisine
Mexican Cuisine vs. Tex-Mex Cuisine
Mexican vs. Puerto Rican
Mexico vs. New Mexico
Mexico vs. United States
Mezcal vs. Tequila
MFA vs. Ma
MFI vs. NBFC
MGIB vs. Post 9/11
MGUS vs. Multiple Myeloma
MI5 vs. MI6
Mia vs. Mia 2
Miami Beach vs. South Beach
Miami vs. Miami Beach
Mica vs. Pigment
Mice vs. Rodent
Michael Addition vs. Robinson Annulation
Michael Jackson vs. Prince
Mick Jagger vs. Steven Tyler
Micro 2 vs. Nano
Micro ATX vs. Mini ITX
Micro-Explosion vs. Puffing
Micro HDMI vs. Mini HDMI
Micro SD Card vs. MicroSDHC Card
Micro SIM vs. Nano SIM
Micro USB vs. Mini USB
Micro vs. OCR
Micro vs. SWIFT Code
Microanalysis vs. Semimicro Analysis
Microarray vs. Next Generation Sequencing
Microarray vs. RNA Sequencing
Microbiology Incident Management Team vs. Outbreak Control Team
Microbiology vs. Molecular Biology
Microbiome vs. Microbiota
Microcapsule vs. Microsphere
Micrococcus Luteus vs. Pseudomonas
Microcontroller vs. Microprocessor
Microcredit vs. Microfinance
Microdata vs. Panel Data
Microemulsion vs. Nanoemulsion
Microfilaments vs. Microtubules
Microgametogenesis vs. Microsporogenesis
Micrognathia vs. Retrognathia
Microgreens vs. Sprouts
Micrometer Screw Gauge vs. Vernier Caliper
Micrometer vs. Vernier Caliper
Micronized Creatine vs. Monohydrate
Microplastics vs. Nanoplastics
Microprocessor vs. Processor
Micropropagation vs. Somatic Cell Hybridization
Micropropagation vs. Tissue Culture
Microsatellite vs. Minisatellite
Microscope vs. Telescope
Microscopic Colitis vs. Ulcerative Colitis
MicroSD Card vs. SD Card
MicroSD vs. miniSD
Microsoft 365 vs. Office 365
Microsoft Office 2010 vs. Microsoft Office 365
Microsoft Office Outlook vs. Microsoft Outlook Express
Microsoft Office vs. OpenOffice
Microsoft Office vs. WPS Office
Microsoft Project Professional 2010 vs. Microsoft Project Standard 2010
Microsoft Silverlight 4 vs. Microsoft Silverlight 5
Microsoft Skype vs. Skype
Microsoft SQL Server vs. SQL Server
Microsoft Surface Tablet vs. Samsung Galaxy Tab 2 10.1
Microsoft Visio 2007 Professional vs. Microsoft Visio 2007 Standard
Microspore vs. Pollen Grain
Microteaching vs. Simulated Teaching
Microtome vs. Ultramicrotomy
Microvilli vs. Villi
Microwave-Assisted Extraction vs. Supercritical Fluid Extraction
Microwave vs. Oven
Microwaves vs. Radio Waves
Middle Age vs. Renaissance
Middle Ages vs. Renaissance
Middle Class vs. Upper Class
Middle Class vs. Working Class
Middle English vs. Old English
Middleware vs. Runtime Libraries
Midge vs. Mo
Midline vs. Midsagittal
Midline vs. Peripheral Line
Midol vs. Tylenol
Midsagittal vs. Sagittal
Midwife vs. Obstetrician
Mifepristone vs. Misoprostol
MIG Welding vs. TIG Welding
Might vs. Would
Migraine vs. Tension Headache
Migratory Birds vs. Resident Birds
Mild Moderate Reactions vs. Severe Anaphylactic Reactions
Mild Steel vs. Stainless Steel
Mildew vs. Mold
Mile vs. Nautical Mile
Milia vs. Xanthelasma
Military Leadership vs. Political Leadership
Military Press vs. Overhead Press
Military Press vs. Shoulder Press
Milk Chocolate vs. Semisweet Chocolate
Milk vs. Skim Milk
Milk vs. Soy Milk
Milkshake vs. Smoothie
Milkshakes vs. Smoothies
Milo vs. Wyatt
Milpa vs. Three Sisters
Mime vs. Pantomime
Mimosa Hostilis vs. Mimosa Pudica
Mind vs. Mindset
Mind vs. Soul
Mind vs. Spirit
Minecraft vs. Roblox
Mineral Acids vs. Organic Acids
Mineral Interest vs. Royalty Interest
Mineral Oil vs. Paraffin Oil
Mineral Oil vs. Synthetic Oil
Mineral Spirits vs. Paint Thinner
Mineral Spirits vs. Safe Spirits
Mineral vs. Ore
Mineral vs. Rock
Mineral Water vs. Soda Water
Mineral Water vs. Spring Water
Mineral Water vs. Tap Water
Minerals vs. Rocks
Minerals vs. Vitamins
Mini Cooper vs. Mini One
Mini Tummy Tuck vs. Tummy Tuck
Miniature Horse vs. Pony
Miniature Horse vs. Shetland Pony
Miniature Schnauzer vs. Standard Schnauzer
Minimized vs. Mitigated
Minimum Path Algorithms vs. Prim's Algorithm
Minimum Weight Algorithms vs. Prim Algorithms
Minis vs. Pony
Minister vs. Reverend
Mink vs. Weasel
Mint vs. Peppermint
Mint vs. Yodlee
MiRNA vs. siRNA
Mirroring vs. Replication
Miscarriage vs. Stillbirth
Mischief vs. Prank
Miscible vs. Soluble
Mismatch Repair vs. Nucleotide Excision Repair
Misoprostol vs. Pitocin
Misrepresentation vs. Mistake
Miss America vs. Miss USA
Miss Universe vs. Miss World
Miss vs. Mrs
Miss vs. Ms
Miss vs. TPS
Missense Mutation vs. Nonsense Mutation
Missile vs. Rocket
Mission vs. Vision
Missionary vs. Pastor
Mist vs. Steam
Mistake vs. Wrong
MITM vs. Pass the Hash
Mitochondria vs. Plastids
Mitochondrial DNA vs. Nuclear DNA
Mitochondrial Inheritance vs. Nuclear Inheritance
Mitral Valve vs. Tricuspid Valve
Mitre Attack vs. Taxi
Mixed Connective Tissue Disease vs. Overlap Syndrome
Mixture vs. Molecule
Mixture vs. Pure Substance
Mixture vs. Solution
Ml vs. Ppm
MLA vs. MLC
MLA vs. MP
MLK vs. Neo-Nazi
Müllerian Duct vs. Wolffian Duct
MLM vs. Pyramid Scheme
MLSS vs. MLVSS
MLST vs. MLVA
MMA vs. UFC
MMC Card vs. SD Card
MMPI vs. MMPI-2
MMS vs. MSM
MMS vs. SMS
Mo Ran vs. Shen Qingqiu
Moa vs. Mou
Mobile Broadband vs. Wireless Broadband
Mobile Phase vs. Stationary Phase
Mobile vs. Smartphone
Mobile vs. Tablet
Mobitz I vs. Mobitz II
Modal Anti-Realism vs. Modal Realism
Modal vs. Viscose
Mode Theory vs. Ray Theory of Light
Model vs. Supermodel
Model vs. Theory
Modeling Clay vs. Polymer Clay
Modeling vs. Simulation
Modelo Behaviorista vs. Modelo Comportamental-Cognitivo
Modem vs. Router
Moderate vs. Radical
Modern Approach on Conflict vs. Traditional Approach
Modern Art vs. Postmodern Art
Modern Atomic Model vs. Old Model
Modern Budgeting vs. Traditional Budgeting
Modern English vs. Old English
Modern Family vs. Parks and Rec
Modern Farming vs. Traditional Farming
Modern Feminism vs. Postmodern Feminism
Modern Grammar vs. Traditional Grammar
Modern Linguistics vs. Traditional Grammar
Modern Male vs. Traditional Male
Modern Relationship vs. Traditional Relationship
Modern Relationships vs. Traditional Relationships
Modern Society vs. Traditional Society
Modern State vs. Nation State
Modern Trade vs. Traditional Trade
Modern vs. Traditional
Modern Woman vs. Traditional Woman
Modernism in Literature vs. Postmodernism in Literature
Modernism vs. Modernity
Modernism vs. Postmodernism
Modernism vs. Realism
Modernism vs. Romanticism
Modernist Architecture vs. Postmodernism Architecture
Modernity vs. Tradition
Modernization Theory vs. Popular Development Theory
Modernization Theory vs. World-Systems Theory
Modification vs. Revision
Modulation vs. Multiplexing
Modulus of Elasticity vs. Modulus of Rigidity
Modulus of Rigidity vs. Young's Modulus
Mof vs. Zeolite
Mohawk vs. Mohican
Moissanite vs. Morganite
Moisture Content vs. Water Content
Moisturizer vs. Serum
Moksha vs. Nirvana
Molality vs. Molarity
Molar Absorptivity vs. Specific Absorbance
Molar Mass vs. Molecular Mass
Molar Solubility vs. Product Solubility Constant
Molar Solution vs. Normal Solution
Molarity vs. Mole
Molarity vs. Normality
Molarity vs. Osmolarity
Molasses vs. Syrup
Molasses vs. Treacle
Mold vs. Yeast
Molds vs. Yeasts
Mole Fraction vs. Weight Percent
Mole vs. Skin Cancer
Mole vs. Vole
Molecular Chemistry vs. Supramolecular Chemistry
Molecular Death vs. Somatic Death
Molecular Distillation vs. Short Path Distillation
Molecular Docking vs. Scoring
Molecular Formula vs. Structural Formula
Molecular Orbital Theory vs. Valence Bond Theory
Molecular Sieve vs. Silica Gel
Molecularity vs. Order of Reaction
Molecule of Element vs. Molecule or Compound
Molecule vs. Particle
Moles vs. Warts
Molluscum Contagiosum vs. Warts
Molybdenum vs. Tungsten
Moment vs. Momentum
Moment vs. Torque
Momentum vs. Velocity
Mon vs. Ron
Monatomic vs. Polyatomic
Monera vs. Protista
Monetary Assets vs. Nonmonetary Assets
Money Market Account vs. Savings Account
Money vs. Time
Money vs. Wealth
MongoDB vs. NoSQL
Monitor vs. Semaphore
Monkeys vs. Primates
Mono Sound vs. Stereo Sound
Mono vs. Stereo
Mono vs. Tonsillitis
Monocarpellary vs. Multicarpellary
Monocarpic Plants vs. Polycarpic Plants
Monocentric Dicentric Chromosomes vs. Polycentric Chromosomes
Monocistronic mRNA vs. Polycistronic mRNA
Monoclinic Sulfur vs. Rhombic Sulfur
Monoclonal Antibodies vs. Polyclonal Antibodies
Monocolpate vs. Tricolpate
Monocrystalline Solar Panels vs. Polycrystalline Solar Panels
Monocrystalline vs. Polycrystalline
Monodisperse Polymers vs. Polydisperse Polymers
Monodox vs. Vibramycin
Monogamous vs. Nonmonogamous
Monogamy vs. Polygamy
Monogastric Digestive System vs. Polygastric Digestive System
Monogastric vs. Ruminant
Monogenic Inheritance vs. Polygenic Inheritance
Monohybrid Cross vs. Reciprocal Cross
Monolayer Culture vs. Suspension Culture
Monologue vs. Soliloquy
Monomer vs. Polymer
Monomial vs. Polynomial
Monomorphic Ventricular Tachycardia vs. Polymorphic Ventricular Tachycardia
Mononuclear Cells vs. Polymorphonuclear Cells
Mononucleosis vs. Strep Throat
Monophyletic vs. Polyphyletic
Monopolistic Competition vs. Monopoly
Monopolistic Competition vs. Perfect Competition
Monopolistically Competitive vs. Oligopolistically Competitive
Monopoly vs. Monopsony
Monopoly vs. Oligopoly
Monoprotic Acids vs. Polyprotic Acids
Monosaccharide vs. Polysaccharide
Monosomy vs. Trisomy
Monospermy vs. Polyspermy
Monotheism vs. Polytheism
Monounsaturated Fats vs. Polyunsaturated Fats
Monster Energy vs. Pepsi
Montessori vs. Steiner
Montessori vs. Waldorf
Mood Disorders vs. Personality Disorders
Mood vs. Tone
Moodys Ratings vs. SP Ratings
Moon Sign vs. Sun Sign
Moon vs. Planet
Moon vs. Satellite
Moon vs. Sun
Moonroof vs. Sunroof
Moonshine vs. Whiskey
Moped vs. Scooter
Moral Absolutism vs. Moral Universalism
Moral vs. Theme
Morale vs. Motivation
Morals vs. Values
Moraxella vs. Neisseria
Morbidity vs. Mortality
Mord vs. Totschlag
More vs. Most
Mores vs. Norms
Morganella Morganii vs. Proteus Mirabilis
Morire vs. Vivere
Morph vs. Morpheme
Morpheme vs. Phoneme
Morpheme vs. Word
Morphing vs. Tweening
Morphology vs. Phonology
Mortgage Insurance vs. Mortgage Protection
MOS Score vs. R Factor
Mosaicism vs. Uniparental Disomy
Moss Agate vs. Tree Agate
Moss vs. WSS
Mossberg 500 vs. Remington 870
Most vs. Most of
Mostly Sunny vs. Partly Cloudy
Mother of Pearl vs. Pearl
Mother vs. Mother-in-law
Mother vs. Stepmother
Mother vs. Wife
Motif vs. Symbol
Motif vs. Theme
Motile vs. Sessile
Motion vs. Resolution
Motivation vs. Satisfaction
Motivational Cognition Theory vs. Motivational Reinforcement Theory
Motocross vs. Supercross
Motor Homunculus vs. Sensory Homunculus
Motor Nerves vs. Sensory Nerves
Motor Neuron Disease vs. Multiple Sclerosis
Motor Neuron Disease vs. Muscular Dystrophy
Motor Neurons vs. Sensory
Motor vs. Pump
Motorbike vs. Scooter
Motorcycle vs. Scooty
Motorola 4G LTE Xoom vs. Motorola Xoom
Motorola Atrix 2 vs. iPhone 4S
Motorola Atrix 2 vs. iPhone 5
Motorola Atrix 2 vs. Motorola Atrix 4G
Motorola Atrix 2 vs. Samsung Galaxy S II Skyrocket
Motorola Atrix 2 vs. Sony Xperia Ion
Motorola Atrix 4G vs. iPhone 4S
Motorola Atrix 4G vs. Samsung Droid Charge
Motorola Atrix 4G vs. Samsung Galaxy S II
Motorola Atrix 4G vs. Samsung Galaxy S II GT-I9100
Motorola Atrix 4G vs. T-Mobile G2X
Motorola Atrix HD vs. Samsung Galaxy S3
Motorola Atrix vs. Motorola Atrix 2
Motorola Atrix vs. Nokia N9
Motorola Atrix vs. Samsung Galaxy S II
Motorola Defy Mini vs. Samsung Galaxy Ace Plus
Motorola Defy vs. Motorola Defy Plus
Motorola Droid 2 vs. Motorola Droid X2
Motorola Droid 4 vs. Samsung Galaxy Nexus
Motorola Droid Bionic vs. iPhone 4S
Motorola Droid Bionic vs. iPhone 5
Motorola Droid Bionic vs. Samsung Droid Charge
Motorola Droid RAZR HD vs. Samsung Galaxy S3
Motorola Droid Razr M vs. Samsung Galaxy S3
Motorola Droid Razr vs. iPhone 4S
Motorola Droid X vs. Motorola Droid X2
Motorola Droid X2 vs. Samsung Droid Charge
Motorola Droid XYBoard 8.2 vs. iPad 2
Motorola Droid XYBoard 8.2 vs. Samsung Galaxy Tab 8.9
Motorola Motoluxe vs. iPhone 4S
Motorola Photon 4G vs. iPhone 4S
Motorola Photon 4G vs. Motorola Triumph
Motorola Photon 4G vs. Nexus S 4G
Motorola Pro vs. Samsung Galaxy S II (Galaxy S2) Model GT-I9100
Motorola RAZR vs. Panasonic Eluga Power
Motorola RAZR vs. Samsung Galaxy S3
Motorola Targa vs. Samsung Droid Charge
Motorola Triumph vs. Nexus S 4G
Motorola Xoom 2 vs. iPad 2
Motorola Xoom 3G 4G vs. Xoom Wi-Fi
Motorola Xoom LTE vs. Samsung Galaxy S8+ LTE
Motorola Xoom Tablet vs. Vizio Tablet
Motorola Xoom vs. Motorola Xoom Family Edition
Motorola Xoom vs. Samsung Galaxy Tab 7.7
Motorola Xoom vs. T-Mobile G-Slate
Motorola Xoom vs. ViewSonic ViewPad 10pro
Motorola Xyboard 10.1 vs. Samsung Galaxy Tab 10.1
Motorola Xyboard 8.2 vs. Samsung Galaxy Tab 7.7 LTE
Motto vs. Slogan
MOU vs. SLA
Mountain Bike vs. Road Bike
Mountain Bike vs. Trail Bicycle
Mountain Goats vs. Mountain Sheep
Mountain Lion vs. Panther
Mountain Lion vs. Puma
Mountain Time vs. Pacific Time
Mountain vs. Plateau
Mouse vs. Rat
Mov Qtff vs. Mp4
Movement vs. Shift in Demand Curve
Movie vs. Video
Movies vs. TV Series
MP3 Player vs. MP4 Player
MP3 vs. MP4
MP3 vs. Wave
MP4 vs. MPEG
MP4 vs. Wave
MPA vs. Mpp
MPa vs. Psi
MPEG-2 vs. MPEG-4
Mph vs. Msph
MPhil by Research vs. MSc by Research
MPhil vs. MSC
MPhil vs. PhD
Mpho Ramakatsa and Others v Elias Magashule and Others Issue vs. Mpho Ramakatsa and Others v Elias Magashule and Others Judgment
Mpho Ramakatsa and Others v Elias Magashule and Others on Freedom of Association vs. Mpho Ramakatsa and Others v Elias Magashule and Others on Freedom of Expression
MPLS vs. VPLS
MPSC vs. UPSC
MPV Reduction vs. Oppenauer Oxidation
Mr. Burke vs. Mrs. Meyer's
MRA vs. MRI
MRI vs. X-ray
mRNA vs. rRNA
mRNA vs. tRNA
MRSA vs. MSSA
MRSA vs. Staph
MRT Trains vs. Maglev Trains
MS SQL Server vs. MySQL
MSA vs. NDA
MSC vs. Meng
MSC vs. Postgraduate Diploma (PGDip)
MSG vs. MSM
MSM vs. Methylsulfonylmethane
MSNBC vs. NBC
MSSP vs. PaaS
MSSP vs. SDP
MSSP vs. Soar
Mt vs. Ton
MTBF vs. MTTR
mTORC1 vs. mTORC2
Mucinex D vs. Mucinex DM
Mucinous Cystadenoma of Ovary vs. Serous
Mucor vs. Rhizopus
Mucor vs. Yeast
Mucus in Stool vs. Worms
Mucus Plug vs. Water Breaking
Mucus vs. Mucus
Mucus vs. Phlegm
Mucus vs. Serous
Mueller Hinton Agar vs. Nutrient Agar
MUFA vs. PUFA
Muffin vs. Scone
Muffins vs. Scones
Mujahideen vs. Taliban
Mule Deer vs. Whitetail Deer
Multi-Factor Authentication vs. Two Factor Authentication
Multi-Protocol Label Switching Service vs. Multipoint Generic Router Encapsulation
Multicasting vs. Unicasting
Multicellular vs. Unicellular
Multicentric Breast Cancer vs. Multifocal
Multicomputer vs. Multiprocessor
Multifactor Authentication vs. PAP Authentication
Multifactor Authentication vs. Two-Factor Authentication
Multifactorial Traits vs. Polygenic Traits
Multigene Families vs. Superfamilies
Multilevel Inheritance vs. Multiple Inheritance
Multimeter vs. Voltmeter
Multinational vs. Transnational
Multipath vs. RAID
Multiple Alleles vs. Polygenic Traits
Multiple Myeloma vs. Smoldering Myeloma
Multiple Oppositions vs. Treatment of Empty Set
Multiple Oppositions vs. Treatment of the Empty Set
Multiple Regression vs. Simple Regression
Multiple Sclerosis vs. Rheumatoid Arthritis
Multiple vs. Numerous
Multipotent Stem Cells vs. Pluripotent Stem Cells
Multiprocessing vs. Multithreading
Multiprogramming Systems vs. Time Sharing Systems
Multitasking vs. Multithreading
Multiunit vs. Visceral Smooth Muscle
Mumps vs. Parotitis
Municipal Finance Management Act vs. Public Finance Management Act
Munnar vs. Ooty
Muppet vs. Puppet
Muppets vs. Sesame Street
Muramic Acid vs. Peptidoglycan
Muriatic Acid vs. Sulfuric Acid
Muscarinic Receptors vs. Nicotinic Receptors
Muscle Cells vs. Nerve Cells
Muscle Fiber vs. Myofibril
Muscle Milk vs. Whey Protein
Muscle Pain vs. Nerve Pain
Muscle Strength vs. Muscle Tone
Muscular Dystrophy vs. Myasthenia Gravis
Muscular Endurance vs. Muscular Strength
Muscular Tissue vs. Nervous Tissue
Muscularis Layer of Esophagus vs. Muscularis Layer of Stomach
Musculoskeletal Disorders vs. Neuromuscular Disorders
Mushrooms vs. Shrooms
Mushrooms vs. Toadstools
Music Record vs. Musical Album
Music vs. Noise
Music vs. Song
Musical vs. Opera
Musket vs. Rifle
Muslim vs. Sikh
Mussels vs. Oysters
Must vs. Shall
Must vs. Should
Mustard vs. Wasabi
Mutagen vs. Mutation
Mutagen vs. Teratogen
Mutant Type vs. Wild Type
Mutation Rate vs. Substitution Rate
Mutation vs. Polymorphism
Mutation vs. Recombination
Mutation vs. SNP
Mutex vs. Semaphore
Mutiny vs. Revolt
Muton vs. Recon
Mutual Funds vs. Stocks
Mutualism vs. Parasitism
Mutualism vs. Protocooperation
Mutualism vs. Symbiosis
Myanmar vs. Nigeria
Myasthenia Gravis vs. Parkinson's
Mycobacterium bovis vs. Mycobacterium tuberculosis
Mycobacterium leprae vs. Mycobacterium tuberculosis
Mycobacterium tuberculosis vs. Nontuberculous Mycobacteria
Mycobacterium vs. Mycoplasma
Mycoderm C vs. Mycoderma
Mycoplasma vs. Phytoplasma
Mycoplasma vs. Ureaplasma
Mycorrhizae vs. Root Nodules
Mycosis Fungoides vs. Sezary Syndrome
Myelin Sheath vs. Neurilemma
Myelin Sheath vs. Schwann Cell
Myelinated Axons vs. Unmyelinated Axons
Myelinated Nerve Fibers vs. Unmyelinated Nerve Fibers
Myelocyte vs. Promyelocyte
Myelodysplastic vs. Myeloproliferative
Myers-Briggs Judging vs. Myers-Briggs Perceiving
Mylanta vs. Pepto-Bismol
Myocardial Infarction vs. Stable Angina
Myocarditis vs. Pericarditis
Myocardium vs. Pericardium
Myofibrils vs. Sarcomeres
Myogenic Heart vs. Neurogenic Heart
Myopathy vs. Neuropathy
Myositis vs. Rhabdomyolysis
Myristic Acid vs. Myristyl Alcohol
Myristic Acid vs. Stearic Acid
Myristoylation vs. Palmitoylation
MySQL Database vs. Oracle Database
MySQL Extension vs. mysqli Extension
MySQL vs. PostgreSQL
MySQL vs. SQL
Mystery vs. Suspense
Myth vs. Superstition
Mythology vs. Pantheon
Mythology vs. Religion
Mythology vs. Science
MyTouch 4G vs. T-Mobile G2X
Myxoma vs. Thrombus