A NOUN PHRASE

A noun phrase or nominal phrase (abbreviated NP) is a phrase which has a noun (or indefinite pronoun) as its head word, or which performs the same grammatical function as such a phrase. Noun phrases are very common cross-linguistically, and they may be the most frequently occurring phrase type.

Noun phrases often function as verb subjects and objects, as predicative expressions, and as the complements of prepositions or postpositions. Noun phrases can be embedded inside each other; for instance, the noun phrase some of his constituents contains the shorter noun phrase his constituents.

In some modern theories of grammar, noun phrases with determiners are analyzed as having the determiner rather than the noun as their head; they are then referred to as determiner phrases.

Often a noun phrase is just a noun or a pronoun:

People like to have money.
I am tired.
It is getting late.

or a determiner and a noun …:

Our friends have bought a house in the village.
Those houses are very expensive.

… perhaps with an adjective:

Our closest friends have just bought a new house in the village.

Sometimes the noun phrase begins with a quantifier:

All those children go to school here.
Both of my younger brothers are married
Some people spend a lot of money.

Numbers:

Quantifiers come before determiners, but numbers come after determiners:

My four children go to school here. (All my children go to school here.)
Those two suitcases are mine. (Both those suitcases are mine)

So the noun phrase is built up in this way:

Noun: people; money 
Determiner + noun: the village, a house, our friends; those houses
Quantifier + noun: some people; a lot of money
Determiner + adjective + noun: our closest friends; a new house.
Quantifier + determiner + noun: all those children;
Quantifier + determiner + adjective + noun: both of my younger brothers

The noun phrase can be quite complicated:

a loaf of nice fresh brown bread
the eight-year-old boy who attempted to rob a sweet shop with a pistol
that attractive young woman in the blue dress sitting over there in the corner

Some words and phrases come after the noun. These are called postmodifiers. A noun phrase can be postmodified in several ways. Here are some examples:

• with a prepositional phrase:

a man with a gun
the boy in the blue shirt
the house on the corner

• with an –ing phrase:

the man standing over there
the boy talking to Angela

• with a relative clause:

the man we met yesterday
the house that Jack built
the woman who discovered radium
an eight-year-old boy who attempted to rob a sweet shop

• with a that clause.
This is very common with reporting or summarising nouns like idea, fact, belief, suggestion:

He’s still very fit, in spite of the fact that he’s over eighty.
She got the idea that people didn’t like her.
There was a suggestion that the children should be sent home.

• with a to-infinitive.
This is very common after indefinite pronouns and adverbs:

You should take something to read.
I need somewhere to sleep.
I’ve got no decent shoes to wear.

There may be more than one postmodifier:

an eight-year old boy with a gun who tried to rob a sweet shop
that girl over there in a green dress drinking a coke

Source :
http://learnenglish.britishcouncil.org/en/english-grammar/clause-phrase-and-sentence/noun-phrase