Idioms
An idiom is a group of words, or in other words, a phrase that has a meaning different from the literal meaning of the words in it.
Idiom:
six of one or half-a-dozen of the other
Meaning:
to be the same, to have no difference between two things
Example:
It was six of one or half-a-dozen of the other if we should take the train or the airplane. They both arrived at the same time and cost the same.
List of common idioms, their meanings and examples of their usage in sentences
The language peculiar to a people or to a district, community, or class