Open English Wordnet
Nouns
(n)comparative, comparative degreethe comparative form of an adjective or adverb“`faster' is the comparative of the adjective `fast'”, “`less famous' is the comparative degree of the adjective `famous'”, “`more surely' is the comparative of the adverb `surely'”
Adjectives
(a)comparativerelating to or based on or involving comparison“comparative linguistics”, “the comparative form of an adjective”