Very basic!
Verb = shows the action performed by the subject [keep in mind that not all verbs are really 'actions' as we normally think of them (sleep, like, taste, etc.)]
Adjectives & adverbs = words that serve to modify, or describe, another word [adj. modify nouns (a
big house), adverbs modify verbs (I
really like), adjectives (he's a
very good boy) and other adverbs (he ran
extremely fast).