(n. sing & pl.) A collection of particles or bodies into one mass; a heap; an aggregation.

Anschluss accumulation acervation addition affiliation agglomerate agglomeration agglutination aggregate aggregation agreement alliance amalgamation amassment articulation assemblage assembly assimilation association blend blending bond bracketing cabal cartel centralization chunk clustering coalescence coalition collection combination combine combo communication company composition concatenation concourse concurrence confederacy confederation confluence conglobation conglomerate conglomeration congregation conjugation conjunction connection consolidation conspiracy convergence copulation coupling cumulation ecumenism embodiment encompassment enosis federalization federation fusion gathering glomeration gob group hookup hunk inclusion incorporation integration intercommunication intercourse interlinking joinder joining jointure junction junta knotting league liaison linkage linking lump marriage mass meeting meld melding merger merging muster package package deal pairing ruck snowball solidification splice stockpile symbiosis syncretism syndication syneresis synthesis tie tie-in tie-up unification union wad wedding yoking