treasure house vs storage

treasure house and storage both are nouns.

Word	Noun	Adjective	Verb	Adverb
treasure house	Yes	No	No	No
storage	Yes	No	No	No

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

Other hypernyms of treasure house include depot, entrepot, store, storehouse.

treasure house (noun)	storage (noun)
a storehouse for treasures	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