Consider the following sentences:-
1. John is a clever boy. (Boy of what kind?)
2. I don't like that boy. (Which boy?)
3. He gave me five mangoes. (How many mangoes?)
4. There is little time for preparation. (How much time?)
In sentence 1, 'clever' shows what kind of boy John is; or in other words, 'clever' describes the boy John.
In sentence 2, 'that' points out which boy is meant.
In sentence 3, 'five' shows how many mangoes he gave me.
In sentence 4, 'little' shows how much time there is for preparation.
A word used with a noun to describe or point out, the person, animal, place or thing which the noun names, or to tell the number or quantity, is called an Adjective.
We may define an Adjective as a word used with a noun to add something for its meaning.
Adjective means added to.
1. The lazy boy was punished.
2. The boy is lazy.
In sentence 1, the Adjective lazy is used along with the noun boy as an epithet or attribute.
In sentence 2, the Adjective lazy is used along with the verb is, and forms part of the Predicate.