collaboration, cooperativeness, teamwork, coordination, cooperate, partnership, participation, coexistence, integration, communication, more...

competition, conflict, opposition, discord, rivalry

altruism, reciprocity, mutualism, commensalism, parasitism, predation, more...

international, economic, close, regional, non, full, mutual, active, military, technical, greater

helping each other,   combined effort,   helping one another,   mutual help,   joint action,   helping eachother,   joint ation,   helpful attitude