Adverbs tell us more about nouns or verbs, etc.
Adverbs of Degree tell us how much: Is there enough wine?
Adverbs of Frequency tell us how often: I never eat meat.
Adverbs of Time tell us when: I saw him last Sunday.
Adverbs of Manner tell us how: She dances badly.
Adverbs of Place to tell us where: I saw him at the cinema.
For more, see Adverbs in English Grammar.