Synonyms and related words :
bipartisanship, both, brace, coaction, coadjuvancy, coadministration, coagency, cochairmanship, codirectorship, collaboration, collaborativeness, collectivism, collusion, commensalism, common effort, common enterprise, communalism, communism, communitarianism, community, complicity, concert, concord, concordance, concurrence, cooperation, cooperativeness, couple, couplet, distich, double harness, doublet, duad, duettino, duo, duumvirate, dyad, ecumenicalism, ecumenicism, ecumenism, ensemble music, ensemble singing, esprit, esprit de corps, fellow feeling, fellowship, harmony, joining of forces, joint effort, joint operation, mass action, match, mates, morale, mutual assistance, mutualism, mutuality, octet, pair, part music, part singing, part song, polyphonic music, pooling, pooling of resources, pulling together, quartet, quintet, reciprocity, septet, septuor, sestet, set of two, sextet, solidarity, span, symbiosis, synergism, synergy, team, team spirit, teamwork, terzet, terzetto, the two, trio, triumvirate, troika, twain, two, twosome, united action, yoke