Synonyms and related words :
antagonism, antipathy, antithesis, clashing, collision, conflict, confrontation, contradiction, contradistinction, contraposition, contrariety, contrast, counterposition, cross-purposes, disagreement, discrepancy, hostility, inconsistency, inimicalness, oppositeness, opposition, opposure, oppugnance, oppugnancy, perversity, polarity, repugnance, showdown,