storage vs storehouse

storage and storehouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
storage	Yes	No	No	No
storehouse	Yes	No	No	No

As nouns, storage and storehouse are synonyms defined as:

Other synonyms of storage include depot, entrepot, store.

storage (noun)	storehouse (noun)
the commercial enterprise of storing goods and materials	a depository for goods
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