Idioms
An idiom is defined as - a group of words in a fixed order that has a particular meaning that is different from the meanings of each word on its own.
Idiom:
a second thought
Meaning:
a thought that one has after thinking about something again
Example:
I gave it a second thought and decided not to quit the class.
List of common idioms, their meanings and examples of their usage in sentences
A group of words which have a different meaning when used together from the one they would have if you took the meaning of each word separately.