trouper vs role player

trouper and role player both are nouns.

Word	Noun	Adjective	Verb	Adverb
trouper	Yes	No	No	No
role player	Yes	No	No	No

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

Other hypernyms of trouper include actor, histrion, player, thespian.

trouper (noun)	role player (noun)
an actor who travels around the country presenting plays	a theatrical performer
a person who is reliable and uncomplaining and hard working	a person who makes deceitful pretenses