role player vs Konstantin Stanislavsky

role player and Konstantin Stanislavsky both are nouns.

Word	Noun	Adjective	Verb	Adverb
role player	Yes	No	No	No
Konstantin Stanislavsky	Yes	No	No	No

role player (noun)	Konstantin Stanislavsky (noun)
a theatrical performer	Russian actor and theater director who trained his actors to emphasize the psychological motivation of their roles (1863-1938)
a person who makes deceitful pretenses