not common or ordinarily encountered; unusually great in amount or remarkable in character or kind; "uncommon birds"; "frost and floods are uncommon during these months"; "doing an uncommon amount of business"; "an uncommon liking for money"; "he owed his greatest debt to his mother's uncommon character and ability"
examine and note the similarities or differences of; "John compared his haircut to his friend's"; "We compared notes after we had both seen the movie"
consider or describe as similar, equal, or analogous; "We can compare the Han dynasty to the Romans"; "You cannot equate success in financial matters with greed"
to form the comparative or superlative form on an adjective or adverb
be comparable; "This car does not compare with our line of Mercedes"