cumulus vs assemblage

cumulus and assemblage both are nouns.

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

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

Other hypernyms of cumulus include accumulation, aggregation, collection.

cumulus (noun)	assemblage (noun)
a collection of objects laid on top of each other	the social act of assembling
a globular cloud	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

cumulus (adjective)	assemblage (adjective)
of or related to cumulous clouds