1. (n.) The act or process of collecting in a mass; a heaping together.

2. (n.) State of being collected in a mass; a mass; cluster.

Anschluss accretion accumulation acervation addition adherence adhesion affiliation agglomerate agglutination aggregate aggregation agreement alliance amalgamation amassment articulation assimilation association blend blending bond bracketing breccia bunch cabal cartel centralization chunk cling clinging clot clotting cluster clustering coagulation coalescence coalition coherence cohesion cohesiveness collection colluvies combination combine combo communication compaction composition concatenation concourse concrete concretion concurrence condensation confederacy confederation confluence congealment congelation congeries conglobation conglomerate conglomeration conjugation conjunction connection consolidation conspiracy convergence copulation coupling cumulation ecumenism embodiment encompassment enosis federalization federation fusion gathering glomeration gob hoard hookup hunk inclusion incorporation inseparability integration intercommunication intercourse interlinking joinder joining jointure junction junta knotting league liaison linkage linking lump marriage mass meeting meld melding merger merging package package deal pairing set snowball solidification splice sticking stockpile symbiosis syncretism syndication syneresis synthesis tie tie-in tie-up trove unification union wad wedding yoking