ms are words, phrases, or expressions that cannot be taken literally. In other words, when used in everyday language, they have a meaning other than the basic one you would find in the dictionary. Every language has its own idioms. Learning them makes understanding and using a language a lot easier and more fun for example, “break a leg” is a common idiom!
Literal meaning: I command you to break a bone in your leg and you should probably go to the doctor afterwards to get it fixed.
Idiomatic meaning: Do your best and do well. Often, actors tell each other to “break a leg” before they go out on stage to perform