Adjectives modify nouns or pronouns.
Adverbs modify verbs, adjectives or other adverbs.
Adjectives vs Adverbs Examples
Good is an adjective. The adverb is well.
Ex: My father is a good driver -> He drives well.
Your English is good -> You speak English well.
I feel good. (psychologically / morally)
I feel well. (healthy / well being)
These words are both adjectives and adverbs:
Lately = recently
Have you seen Tom lately?
Hardly = very little, almost not
Sarah was rather unfriendly to me at the party. She hardly spoke to me.(she spoke to me very little, almost not at all)
George and Hilda want to get married but they've only known each other for a few days. I don't think they should get married yet. They hardly know each other. (they know each other very little)
We cannot form adverbs from adjectives ending in ly.
Common adjectives: friendly, lively, ugly, lonely. We add the pattern in a … way/manner or fashion to make them adverb.
Friendly: In a friendly way/manner/fashion He behaves in a friendly way.
Lively : In a lively way / manner / fashion