air power vs collection

air power and collection both are nouns.

Word	Noun	Adjective	Verb	Adverb
air power	Yes	No	No	No
collection	Yes	No	No	No

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

Other hypernyms of air power include accumulation, aggregation, assemblage.

air power (noun)	collection (noun)
the aggregation of a country's military aircraft	the act of gathering something together
	a publication containing a variety of works
	request for a sum of money
	several things grouped together or considered as a whole