Idioms
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.
Idiom:
go to the trouble (of doing something)
Meaning:
to make an extra effort to do something
Example:
My aunt went to the trouble of buying a new bed for her guests.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a widely used saying or expression containing a figurative meaning that differs from the phrase's literal meaning.