sperm bank vs repository

sperm bank and repository both are nouns.

Word	Noun	Adjective	Verb	Adverb
sperm bank	Yes	No	No	No
repository	Yes	No	No	No

As nouns, repository is a hypernym of sperm bank; that is, repository is a word with a broader meaning than sperm bank:

sperm bank: a depository for storing sperm
repository: a facility where things can be deposited for storage or safekeeping

Other hypernyms of sperm bank include deposit, depositary, depository.

sperm bank (noun)	repository (noun)
a depository for storing sperm	a facility where things can be deposited for storage or safekeeping
	a burial vault (usually for some famous person)
	a person to whom a secret is entrusted