fictitious character vs Guinevere

fictitious character and Guinevere both are nouns.

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

fictitious character (noun)	Guinevere (noun)
an imaginary person represented in a work of fiction (play or film or story)	(Arthurian legend) wife of King Arthur; in some versions of the legend she became Lancelot's lover and that led to the end of the Knights of the Round Table