antagonism, antipathy, antithesis, argumentation, balance, clashing, collision, conflict, confrontation, contradiction, contradistinction, contraindication, contraposition, contrariety, contrast, controversy, counterposition, credit, cross-purposes, deficit, departure, deviation, difference, disaccord, disaccordance, disagreement, disconformity, discongruity, discord, discordance, discordancy, discreteness, disharmony, disparity, dissemblance, dissension, dissent, dissidence, dissimilarity, dissimilitude, dissonance, distinction, distinctness, disunion, disunity, divergence, divergency, diversity, epact, faction, far cry, gap, heterogeneity, hostility, inaccordance, incompatibility, incongruity, inconsistency, inconsonance, inequality, inharmoniousness, inharmony, inimicalness, irreconcilability, jarring, lacuna, mixture, negation, net, nonconformity, odds, oppositeness, opposition, opposure, oppugnance, oppugnancy, otherness, perversity, polarity, remainder, repugnance, separateness, showdown, surplus, unconformity, unharmoniousness, unlikeness, unorthodoxy, variance, variation, variegation, variety