air power vs accumulation

air power and accumulation both are nouns.

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

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

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

air power (noun)	accumulation (noun)
the aggregation of a country's military aircraft	the act of accumulating
	several things grouped together or considered as a whole
	(finance) profits that are not paid out as dividends but are added to the capital base of the corporation
	an increase by natural growth or addition