The main difference between verbs vs. adverbs is that verbs are action words, and adverbs are description words. Verbs state the action performed by a noun, while adverbs provide more information about how that action is performed.Take the word ‘cool’. In the sentence, “he walks cool”, the word ‘cool’ is an adverb. In the sentence, “cool the hot dish”, the word ‘cool’ is a verb.