When vs. Who

Attribute	When	Who
Definition	Refers to a specific time or period	Refers to a person or group of people
Interrogative Pronoun	When?	Who?
Usage	Used to inquire about time or timing	Used to inquire about a person or identity
Examples	When did you arrive?	Who is coming to the party?

Introduction

When and who are two fundamental interrogative pronouns in the English language. They are used to ask questions about time and people, respectively. While they may seem simple on the surface, there are actually several key differences between the two that are worth exploring.

Usage

When is used to inquire about the time or moment at which something happens. For example, "When is the meeting?" or "When did you arrive?" On the other hand, who is used to ask about the identity of a person or people. For instance, "Who is coming to the party?" or "Who won the game?"

Function

When is a temporal interrogative pronoun that seeks information about the timing of an event or action. It is often used in conjunction with other words to form more complex questions, such as "When will you be back?" or "When did they leave?" Who, on the other hand, is a personal interrogative pronoun that focuses on the identity of a person or people. It is commonly used in questions like "Who is that?" or "Who are you talking to?"

Scope

When has a broader scope than who, as it can be used to inquire about any point in time, past, present, or future. It can also be used in a more abstract sense, such as in questions like "When is the right time to bring up this topic?" Who, on the other hand, is more limited in scope, as it is specifically used to ask about people or individuals.

Examples

Here are some examples to illustrate the differences between when and who:

• When did you last see her?
• Who is coming to the party tonight?
• When will the concert start?
• Who won the game last night?
• When is the best time to visit the museum?
• Who is that person standing over there?

Conclusion

In conclusion, when and who are both important interrogative pronouns in the English language, each serving a distinct purpose. While when is used to inquire about time and timing, who is used to ask about people and identity. Understanding the differences between the two can help improve communication and clarity in everyday conversations.