Idioms
A group of words which have a different meaning when used together from the one they would have if you took the meaning of each word separately.
Idiom:
fan the flames of (something)
Meaning:
to make a situation worse
Example:
The speech by the labor leader fanned the flames of the angry workers.
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.