Elysium vs Greek mythology

Elysium and Greek mythology both are nouns.

Word	Noun	Adjective	Verb	Adverb
Elysium	Yes	No	No	No
Greek mythology	Yes	No	No	No

Elysium (noun)	Greek mythology (noun)
(Greek mythology) the abode of the blessed after death	the mythology of the ancient Greeks
a place or condition of ideal happiness