Idioms
An idiom is a group of words, or in other words, a phrase that has a meaning other than its literal meaning of the words in it.
Idiom:
freak out
Meaning:
to become angry or lose control of oneself
Example:
I freaked out when I discovered that my reservation had not been made.
List of common idioms, their meanings and examples of their usage in sentences
Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.