noun
1.
Synonyms: unification , coadunation, coalition, consolidation, melding, mergence, merger, merging, union
2.
individuals or organized interests banded together to further a common end
a combination of citizens devoted to holding down taxes
Synonyms: bloc, coalition, combine, faction, party, ring
Related Word: cartel, pool, syndicate, trust; cabal, circle, clique, coterie, set
3.
Synonyms: association 1, affiliation, alliance, cahoots, conjunction, connection, hookup, partnership, tie-up, togetherness