Adjective

• positive

  The primary form of an adjective or adverb; denotes a quality without qualification, comparison,...

• comparative

  Form of an adjective or adverb; "`faster' is the comparative of the adjective `fast'";...

• superlative

  Form of an adjective or adverb; "`fastest' is the superlative of the adjective `fast'";...

Also contains

• adverb

  The word class that qualifies verbs or clauses.

• adverbial

  A word or group of words function as an adverb.