Synonyms and related words :
assort, audit, bolt, bracket, categorize, check, check and doublecheck, check out, check over, classify, confirm, contrast, cross-check, divide, double-check, gradate, grade, group, painstakingly match, prove, rank, recheck, riddle, screen, scrutinize comparatively, separate, sieve, sift, size, sort, sort out, subordinate, test, triple-check, validate, verify,