Synonyms for Agglomerate (same or very similar meaning)
WordNet sense 1 (a collection of objects laid on top of each other):
cumulus, heap, mound, pile, cumulationWordNet sense 2 (clustered together but not coherent):
agglomerated, agglomerative, clusteredWordNet sense 3 (forming a whole or aggregate):
collectiveFrom the ODE community, based on WordNetadd/edit