Hero vs Greek mythology

Hero and Greek mythology both are nouns.

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

Hero (noun)	Greek mythology (noun)
(Greek mythology) priestess of Aphrodite who killed herself when her lover Leander drowned while trying to swim the Hellespont to see her	the mythology of the ancient Greeks
Greek mathematician and inventor who devised a way to determine the area of a triangle and who described various mechanical devices (first century)