agglomeration vs assemblage

agglomeration and assemblage both are nouns.

Word	Noun	Adjective	Verb	Adverb
agglomeration	Yes	No	No	No
assemblage	Yes	No	No	No

As nouns, assemblage is a hypernym of agglomeration; that is, assemblage is a word with a broader meaning than agglomeration:

Other hypernyms of agglomeration include accumulation, aggregation, collection.

agglomeration (noun)	assemblage (noun)
the act of collecting in a mass; the act of agglomerating	the social act of assembling
a jumbled collection or mass	a system of components assembled together for a particular purpose
	a group of persons together in one place
	several things grouped together or considered as a whole