In syntax and grammar, a phrase is a group of words which act together as a grammatical unit. It is a part of a sentence and cannot stand on its own.
We can also define Phrase as one or more words that form a meaningful grammatical unit within a clause.
For example: “the very happy dog.” is a noun phrase which contains the adjective phrase “very happy”
A phrase is a part of a sentence without a Subject, Verb, Object or Complement.
Examples
Phrases provide more information about whatever the sentence is speaking about.