scene-stealer vs role player

scene-stealer and role player both are nouns.

Word	Noun	Adjective	Verb	Adverb
scene-stealer	Yes	No	No	No
role player	Yes	No	No	No

As nouns, role player is a hypernym of scene-stealer; that is, role player is a word with a broader meaning than scene-stealer:

scene-stealer: an actor who draws more attention than other actors in the same scene
role player: a theatrical performer

Other hypernyms of scene-stealer include actor, histrion, player, thespian.

scene-stealer (noun)	role player (noun)
an actor who draws more attention than other actors in the same scene	a theatrical performer
	a person who makes deceitful pretenses