Greek mythology vs Thanatos

Greek mythology and Thanatos both are nouns.

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

Greek mythology (noun)	Thanatos (noun)
the mythology of the ancient Greeks	(psychoanalysis) an unconscious urge to die
	(Greek mythology) the Greek personification of death; son of Nyx