to form the comparative or superlative form on an adjective or adverb(verb.communication)
source: wordnet30
To examine the character or qualities of, as of two or more persons or things, for the purpose of discovering their resemblances or differences; to bring into comparison; to regard with discriminating attention.(verb)
source: webster1913
To be like or equal; to admit, or be worthy of, comparison; as, his later work does not compare with his earlier.(verb)