Noun is word to point/signed at the thing. For example : the tall, my brother, loneliness, etc. Phrase is a group of words. So, Noun phrases is a group of word that to point/signed at the thing.
Noun phrase consist of a pronoun or noun with only associated noun phrases can act as a subject, object, complement object of preposition, and object of verb.
The function of Noun phrase :
The children play on the forest.
My mother buys a basket of vegetables.
The basic structure of Noun phrase :
Phrase consist minimally of a head this means, in one word phrase like “boy”, the head is “boy” in langer phrase a string of elements my appear before the head.
Example : The naughty boy.