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:
keep a secret
Meaning:
to not tell a secret to others
Example:
I am trying to keep a secret about my friend's boyfriend.
List of common idioms, their meanings and examples of their usage in sentences
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.