General question about nouns and adjectives (can nouns be adjectives and how to decline)

1. Can a noun be used as an adjective?
2. Can an adjective be used without a noun?
3. What is the relationship between noun and adjective?
4. What is it called when an adjective is used as a noun?
5. Why are nouns changed to adjectives give one example?

Can a noun be used as an adjective?

English often uses nouns as adjectives - to modify other nouns. For example, a car that people drive in races is a race car. A car with extra power or speed is a sports car. Nouns that modify other nouns are called adjectival nouns or noun modifiers.

Can an adjective be used without a noun?

Adjectives are often used without nouns. The structure the + adjective is used to talk about some well-known groups of people. Examples are: the blind, the deaf, the unemployed, the rich, the poor, the young, the old, the dead etc. He is collecting money for the blind.

What is the relationship between noun and adjective?

A noun is a person, place, or thing. An adjective is a word that describes a noun. In the sentence "There was an ugly duckling" the adjective "ugly" describes or modifies the noun "duckling." Many nouns can be used to modify other nouns, just like adjectives modify nouns.

What is it called when an adjective is used as a noun?

Nominalized adjective, an adjective used as a noun.

Why are nouns changed to adjectives give one example?

A noun is a person, place or thing; an adjective modifies or describes the noun. The girl is a beauty -- beauty being a noun. The girl can also be beautiful -- beautiful, in this case, being an adjective. Turning a noun into an adjective requires only a few minor changes to the ending of a word.