Adjective in English Grammar
Adjective is a part of speech that defines a characteristic of an object or concept. Adjectives usually answer the question ‘what kind of?’.
black; big; lazy; old.
Adverb is a part of speech describing character or circumstances of an action. Adverbs usually answer the questions ‘how? in what way? when? where?’, etc.
simply; very; slowly; lately; fast.
Some English adjectives and adverbs do not differ in their form. The same word ‘fast’ can be an adjective or an adverb depending on whether it modifies a noun or a verb.
This is a fast car. The car goes fast.
Since adjectives and adverbs function as modifiers to other parts of speech, they are often treated together as a group of modifiers.
English adjectives have neither gender, nor number, nor case. The same adjective can be used with any form of a noun.
I put on an old hat. The old man’s shoes wore through. Many old buildings surround the park.
Adverbs, too, are unchangeable.