treasury vs depository

treasury and depository both are nouns.

Word	Noun	Adjective	Verb	Adverb
treasury	Yes	No	No	No
depository	Yes	No	No	No

As nouns, depository is a hypernym of treasury; that is, depository is a word with a broader meaning than treasury:

treasury: a depository (a room or building) where wealth and precious objects can be kept safely
depository: a facility where things can be deposited for storage or safekeeping

Other hypernyms of treasury include deposit, depositary, repository.

treasury (noun)	depository (noun)
a depository (a room or building) where wealth and precious objects can be kept safely	a facility where things can be deposited for storage or safekeeping
the government department responsible for collecting and managing and spending public revenues
the funds of a government or institution or individual