Pluto vs fictitious character

Pluto and fictitious character both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pluto	Yes	No	No	No
fictitious character	Yes	No	No	No

Pluto (noun)	fictitious character (noun)
a large asteroid that was once thought to be the farthest known planet from the sun; it has an elliptical orbit	an imaginary person represented in a work of fiction (play or film or story)
(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