powder magazine vs storage

powder magazine and storage both are nouns.

Word	Noun	Adjective	Verb	Adverb
powder magazine	Yes	No	No	No
storage	Yes	No	No	No

As nouns, storage is a hypernym of powder magazine; that is, storage is a word with a broader meaning than powder magazine:

powder magazine: a storehouse (as a compartment on a warship) where weapons and ammunition are stored
storage: a depository for goods

Other hypernyms of powder magazine include depot, entrepot, store, storehouse.

powder magazine (noun)	storage (noun)
a storehouse (as a compartment on a warship) where weapons and ammunition are stored	the commercial enterprise of storing goods and materials
	the act of storing something
	depositing in a warehouse
	a depository for goods
	an electronic memory device
	(computer science) the process of storing information in a computer memory or on a magnetic tape or disk