repository vs sepulture

repository and sepulture both are nouns.

Word	Noun	Adjective	Verb	Adverb
repository	Yes	No	No	No
sepulture	Yes	No	No	No

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

Other hypernyms of repository include burial chamber, sepulcher, sepulchre.

repository (noun)	sepulture (noun)
a facility where things can be deposited for storage or safekeeping	a chamber that is used as a grave
a burial vault (usually for some famous person)	the ritual placing of a corpse in a grave
a person to whom a secret is entrusted