role player vs slicker

role player and slicker both are nouns.

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

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

Other hypernyms of role player include beguiler, cheat, cheater, deceiver, trickster.

role player (noun)	slicker (noun)
a theatrical performer	a macintosh made from cotton fabric treated with oil and pigment to make it waterproof
a person who makes deceitful pretenses	someone who leads you to believe something that is not true
	a person with good manners and stylish clothing