Idioms
Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.
Idiom:
have a vested interest in (something)
Meaning:
to have a personal interest (often financial) in something
Example:
The mayor of the city has a vested interest in building the new stadium.
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