Can you use a comma instead of semicolon?

You can't always use a comma instead of a semicolon. They have different grammatical functions and using them interchangeably will often result in grammatical errors.

Here's a breakdown:

Semicolon (;)

* Separates two independent clauses (complete sentences) that are closely related in meaning.

* Can replace a coordinating conjunction (for, and, nor, but, or, yet, so) when the clauses are closely related.

* Used with conjunctive adverbs (however, therefore, moreover, etc.) to connect independent clauses.

Comma (,)

* Separates items in a list.

* Separates independent clauses when they are joined by a coordinating conjunction.

* Separates introductory phrases and clauses from the main clause.

* Separates nonessential clauses and phrases from the rest of the sentence.

Example:

* Incorrect: I went to the store, I bought some milk.

* Correct: I went to the store; I bought some milk. (Semicolon used to separate closely related independent clauses.)

* Incorrect: I like to eat pizza, but I also like pasta.

* Correct: I like to eat pizza, but I also like pasta. (Comma used correctly with a coordinating conjunction.)

In summary, while a comma and semicolon can sometimes appear similar in usage, they have distinct roles in grammar. Understanding their differences will help you write more clearly and accurately.