Synonyms to buffer state

ally, accessory, accomplice, act in concert, act together, adjunct, affiliate, alter ego, amalgamate, analogon, analogue, apply, archduchy, archdukedom, associate, band, band together, be in cahoots, be in league, bedfellow, bind, body politic, bracket, brother, brother-in-arms, bunch, bunch up, cabal, captive nation, cement a union, centralize, chieftaincy, chieftainry, city-state, close copy, close match, club, club together, coact, coadjutor, coalesce, cognate, cohort, collaborate, collaborator, colleague, collude, colony, combine, come together, commonweal, commonwealth, companion, compatriot, compeer, complement, comrade, concert, concord, concur, confederate, confrere, congenator, congener, connect, consociate, consolidate, consort, conspire, cooperate, coordinate, correlate, correlative, correspondent, counterpart, country, county, couple, crony, do business with, domain, dominion, draw a parallel, duchy, dukedom, earldom, empery, empire, equate, equivalent, federalize, federate, fellow, fellow member, free city, friend, fuse, gang, gang up, get heads together, get together, go in partner