Open English Wordnet
Nouns
(n)conglomerate, empirea group of diverse companies under common ownership and run as a single organization
Verbs
(v)accumulate, cumulate, conglomerate, pile up, gather, amassincrease in amount by collecting or gathering“Journals are accumulating in my office”, “The work keeps piling up”
Adjectives
(s)conglomeratecomposed of heterogeneous elements gathered into a mass“the conglomerate peoples of New England”