accordance, affinity, agent, agreement, alignment, alikeness, allegory, alliance, alternate, alternative, ambiguity, aping, approach, approximation, assimilation, backup, balancing, change, changeling, closeness, coextension, collineation, community, comparability, comparative anatomy, comparative degree, comparative grammar, comparative judgment, comparative linguistics, comparative literature, comparative method, compare, comparing, comparison, concurrence, conformity, confrontation, confrontment, contrast, contrastiveness, copy, copying, correlation, correspondence, counterfeit, deputy, distinction, distinctiveness, double, dummy, equal, equidistance, equivalent, equivocation, equivoque, ersatz, exchange, fake, fill-in, ghost, ghostwriter, identity, imitation, likeness, likening, locum tenens, makeshift, matching, metaphor, metonymy, mimicking, nearness, next best thing, nondivergence, opposing, opposition, parallelism, parity, personnel, phony, pinch hitter, proportion, proxy, relation, relief, replacement, representative, resemblance, reserves, ringer, sameness, second string, secondary, semblance, sign, similarity, simile, similitude, simulation, spares, stand-in, sub, substituent, substitute, substitution, succedaneum, superseder, supplanter, surrogate, symbol, synecdoche, tergiversation, third string, token, trope of comparison, understudy, utility player, vicar, vice-president, vice-regent, weighing