affiliation alignment alliance amalgamation association boon companionship brotherhood brotherliness cahoots camaraderie chumship coadunation coalescence coalition colleagueship collegialism collegiality combination community of interest companionship comradery confederacy confederation confraternity consolidation consorting consortship copartnership copartnery esprit de corps federation fellowship fraternalism fraternity fraternization freemasonry fusion good-fellowship hobnobbing hookup inclusion incorporation integration league merger partnership sisterhood sisterliness sodality sorority tie-in tie-up unification union