affiliation alignment alliance amalgamation association boon companionship brotherhood brotherliness cahoots chumship club coadunation coalescence coalition colleagueship collegialism collegiality combination community of interest companionship comradeship confederacy confederation confraternity confrerie consolidation consortship copartnership copartnery country club esprit de corps federation fellowship fraternal order fraternalism fraternity fraternization freemasonry fusion guild hookup inclusion incorporation integration league merger order partnership secret society sisterhood sisterliness society sodality tie-in tie-up unification union