accumulation, amas, assemblage, association, assortiment, attroupement, centralisation, clan, collectif, collection, collège, comité, commission, communauté, concentration, concours, ensemble, essaim, famille, formation, foule, grappe, groupe, lobby, paquet, parti, peloton, phalange, quantité, rassemblement, recueil, réunion, section, société, tas, tribu, troupe, union