Idioms are phrases that have a figurative meaning that is different from the literal meaning of the words. Here are a few examples:
* "Kick the bucket" - This doesn't mean to literally kick a bucket, it means to die.
* "It's raining cats and dogs" - Obviously, it's not raining actual animals. It means it's raining heavily.
* "Break a leg" - This is a common saying for good luck, not an instruction to injure yourself.
Let me know if you'd like some more examples, or if you have a specific topic in mind!