fictitious character vs Sir Lancelot

fictitious character and Sir Lancelot both are nouns.

Word	Noun	Adjective	Verb	Adverb
fictitious character	Yes	No	No	No
Sir Lancelot	Yes	No	No	No

fictitious character (noun)	Sir Lancelot (noun)
an imaginary person represented in a work of fiction (play or film or story)	(Arthurian legend) one of the knights of the Round Table; friend of King Arthur until (according to some versions of the legend) he became the lover of Arthur's wife Guinevere