Mount Parnassus vs Greek mythology

Mount Parnassus and Greek mythology both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mount Parnassus	Yes	No	No	No
Greek mythology	Yes	No	No	No

Mount Parnassus (noun)	Greek mythology (noun)
(Greek mythology) a mountain in central Greece where (according to Greek mythology) the Muses lived; known as the mythological home of music and poetry	the mythology of the ancient Greeks