Adjectives come in several varieties, including superlative and comparative.
In linguistics, an adjective (abbreviated adj) is a word that modifies a noun or noun phrase or describes its referent. Its semantic role is to change information given by the noun.
An adjective is a word that describes a noun (the name of a thing or a place).
ADJECTIVE | meaning in the Cambridge English Dictionary
Adjective definition, any member of a class of words that modify nouns and pronouns, primarily by describing a particular quality of the word they are modifying, as wise in a wise grandmother, or perfect in a perfect score, or handsome in he is extremely handsome.