Idioms are phrases which cannot be understood simply by looking at the meaning of the individual words in the phrase.
Idiom:
make a fuss (over someone or something)
Meaning:
to worry about or make a bother about someone or something
Example:
My grandmother always makes a fuss over me when I visit her.
List of common idioms, their meanings and examples of their usage in sentences
An expression in the usage of a language that is peculiar to itself either in having a meaning that cannot be derived from the conjoined meanings of its elements or in its grammatically atypical use of words.