Synonyms to one another

analogue, ally, alter ego, analogon, associate, brother, close copy, close match, cognate, companion, complement, congenator, congener, coordinate, correlate, correlative, correspondent, counterpart, each other, equivalent, fellow, image, kindred spirit, like, likeness, match, mate, near duplicate, obverse, parallel, pendant, picture, reciprocal, reciprocatist, reciprocator, second self, similitude, simulacrum, sister, soul mate, such, suchlike, tally, the like of, the likes of, twin, apply, bind, bracket, connect, corelate, couple, draw a parallel, equate, identify, interrelate, link, parallelize, relate, relativize, the like