Asia vs collection

Asia and collection both are nouns.

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

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

Other hypernyms of Asia include accumulation, aggregation, assemblage.

Asia (noun)	collection (noun)
the nations of the Asian continent collectively	the act of gathering something together
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 publication containing a variety of works
	request for a sum of money
	several things grouped together or considered as a whole