monument vs repository

monument and repository both are nouns.

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

As nouns, monument and repository are synonyms defined as:

monument and repository: a burial vault (usually for some famous person)

monument (noun)	repository (noun)
a structure erected to commemorate persons or events	a facility where things can be deposited for storage or safekeeping
a burial vault (usually for some famous person)	a burial vault (usually for some famous person)
an important site that is marked and preserved as public property	a person to whom a secret is entrusted