I know, grammar might be boring. Oh, what am I saying? I don’t really mean that: I love grammar.
Let me introduce you to homophones. As you probably know, the prefix “homo” means “the same” and homophones are those words who have the same pronunciation but different meaning and spelling; that is, they sound exactly the same but they’re not. BTW, “phone” comes from a Greek word and means voice or sound.