Idioms
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.
Idiom:
from the ground up
Meaning:
from the beginning (as in building a house or other building or a business)
Example:
My uncle built his business from the ground up.
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