Pluto vs Roman mythology

Pluto and Roman mythology both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pluto	Yes	No	No	No
Roman mythology	Yes	No	No	No

Pluto (noun)	Roman mythology (noun)
a large asteroid that was once thought to be the farthest known planet from the sun; it has an elliptical orbit	the mythology of the ancient Romans
(Roman mythology) god of the underworld; counterpart of Greek Hades
a cartoon character created by Walt Disney, a red-colored, medium-sized, short-haired dog with black ears