pantheon vs monument

pantheon and monument both are nouns.

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

As nouns, monument is a hypernym of pantheon; that is, monument is a word with a broader meaning than pantheon:

Other hypernyms of pantheon include memorial.

pantheon (noun)	monument (noun)
(antiquity) a temple to all the gods	a structure erected to commemorate persons or events
a monument commemorating a nation's dead heroes	a burial vault (usually for some famous person)
all the gods of a religion	an important site that is marked and preserved as public property