Asia vs assemblage

Asia and assemblage both are nouns.

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

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

Other hypernyms of Asia include accumulation, aggregation, collection.

Asia (noun)	assemblage (noun)
the nations of the Asian continent collectively	the social act of assembling
the largest continent with 60% of the earth's population; it is joined to Europe on the west to form Eurasia; it is the site of some of the world's earliest civilizations	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