WordNet sense 1 (a person who is of equal standing with another in a group):

compeer, match, peer, peer

WordNet sense 2 (be identical or equivalent to):

be

WordNet sense 3 (be equal to in quality or ability):

rival, touch

WordNet sense 4 (equal in amount or value):

like, same

WordNet sense 5 (of the score in a contest):

even, level

WordNet sense 6 (of equal importance, rank, or degree):

coordinate, coordinate

WordNet sense 7 (having the same standing before the law):

coequal

WordNet sense 8 (total debits and credits are equal):

balanced

WordNet sense 9 (being essentially equal to something):

equivalent, tantamount

WordNet sense 10 (make equal, uniform, corresponding, or matching):

equalize, equate, equalise