Apostrophe: An apostrophe is a punctuation mark used to indicate possession (e.g., "the dog's bone") or the omission of letters or numbers (e.g., "can't" for "cannot" or "class of '99"). It typically appears as a small, single mark that curves upwards (’).
Comma: A comma is a punctuation mark that indicates a pause in a sentence or separates items in a list. It helps clarify meaning by grouping and organizing words, phrases, or clauses, making sentences easier to read and understand. It looks like a small, curved line (,).