Synonyms and related words :
affiliation, alignment, alliance, amalgamation, association, cahoots, coadunation, coalescence, coalition, collaboration, colleagueship, collegialism, collegiality, combination, companionship, company, comradeship, confederacy, confederation, confraternity, consociation, consolidation, cooperation, copartnership, copartnery, federation, fellowship, fifth-column activity, fraternalism, fraternity, freemasonry, fusion, high treason, hookup, inclusion, incorporation, integration, league, lese majesty, membership, merger, misprision of treason, partaking, participation, partnership, petty treason, quislingism, sedition, sharing, society, sodality, sorority, tie-in, tie-up, treason, unification, union