Here's why:
* Adjectives describe nouns or pronouns. They tell us more about the person, place, thing, or idea that the noun or pronoun refers to.
* Verbs express actions or states of being. They tell us what the subject is doing or what is happening.
Example:
* The *beautiful* bird *sang* sweetly.
* "Beautiful" is an adjective modifying the noun "bird".
* "Sang" is the verb, describing the action of the bird.
Adverbs are the words that modify verbs, providing information about how, when, where, or to what extent the action occurs.
Example:
* The bird sang *beautifully*.
* "Beautifully" is an adverb modifying the verb "sang".
Let me know if you have any other grammar questions!