comparison, compare, equivalence, comparability -- (qualities that are comparable; "no comparison between the two books"; "beyond compare")
Overview of verb compare
The verb compare has 4 senses
compare -- (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")
compare -- (be comparable; "This car does not compare with our line of Mercedes")
compare, liken, equate -- (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")
compare -- (to form the comparative or superlative form on an adjective or adverb)