Double-click on any word and see its definition from Cambridge Dictionaries Online.

What is the difference between adverbs and adjectives?

A very basic answer to this question is:

Adjectives are used to describe nouns.

			A big mosque
			Black cats

Two things to note here:

Adjectives usually come immediately before the noun, and not after it as in some other languages.

Adjectives only have one form, i.e. they do not change when describing plural nouns.

			One black cat.
			Two black cats (not blacks).

Adverbs are used to describe verbs, adjectives or other adverbs.

			He runs quickly.
			It is an extremely difficult question.
			The car rolled very slowly down the road.

Many adverbs end in the letters 'ly', but there are also many exceptions.

Please see the following web site for a very good description of both adjectives and adverbs:

http://andromeda.rutgers.edu/~jlynch/Writing/a.html