accord accordance affinity agape agreement amity bipartisanship bonds of harmony brotherly love caritas cement of friendship charity coaction coadjuvancy coadministration coagency cochairmanship codirectorship collaboration collaborativeness collectivism collusion commensalism common effort common enterprise communalism communion communism communitarianism community community of interests compatibility complicity concert concord concordance concurrence congeniality cooperation cooperativeness correspondence duet duumvirate ecumenicalism ecumenicism ecumenism empathy esprit esprit de corps feeling of identity fellow feeling fellowship frictionlessness good vibes good vibrations happy family harmony identity joining of forces joint effort joint operation kinship like-mindedness love mass action morale mutual assistance mutualism mutuality octet oneness peace pooling pooling of resources pulling together quartet quintet rapport rapprochement reciprocity septet sextet sharing solidarity symbiosis sympathy symphony synergism synergy teamwork trio triumvirate troika understanding union unison united action unity