role player vs Richard Burton

role player and Richard Burton both are nouns.

Word	Noun	Adjective	Verb	Adverb
role player	Yes	No	No	No
Richard Burton	Yes	No	No	No

role player (noun)	Richard Burton (noun)
a theatrical performer	Welsh film actor who often co-starred with Elizabeth Taylor (1925-1984)
a person who makes deceitful pretenses	English explorer who with John Speke was the first European to explore Lake Tanganyika (1821-1890)