Ways of modifying a noun
A noun can be modified by:
1. adjectives
She is a girl.
She is a beautiful girl.
2. nouns
I bought a clock.
I bought an alarm clock.
3. prepositional phrases
The company had a profit.
The company had a profit of $30 million.
4. participles
The window was big.
The broken window was big.
5. adjective clauses
The man was very handsome.
The man who jumped to his death was very handsome.
Adjectives
Adjectives describe the qualities of people, things, places, etc.
She is a beautiful girl.
Her father is an old man.
She is beautiful, but her sister is growing old.