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:
on the job
Meaning:
working, doing what you are expected to do
Example:
The young man has only been on the job for a few weeks now.
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