Idioms
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.
Idiom:
to and fro
Meaning:
from one place to another and then back again, back and forth
Example:
We went to and fro between the two items as we tried to decide what to buy.
List of common idioms, their meanings and examples of their usage in sentences
Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.