Robinson Crusoe vs fictitious character

Robinson Crusoe and fictitious character both are nouns.

Word	Noun	Adjective	Verb	Adverb
Robinson Crusoe	Yes	No	No	No
fictitious character	Yes	No	No	No

Robinson Crusoe (noun)	fictitious character (noun)
the hero of Daniel Defoe's novel about a shipwrecked English sailor who survives on a small tropical island	an imaginary person represented in a work of fiction (play or film or story)