Which words in English have Apostrophes?

Apostrophes are commonly used in English for contractions and possessives. For example, contractions like "don't" (do not) and "it's" (it is) use apostrophes to indicate omitted letters. In possessive forms, such as "John's book" or "the cat's toy," apostrophes show ownership. Additionally, in some cases, apostrophes can be used to form plurals of letters or symbols, like "mind your p's and q's."