ham vs role player

ham and role player both are nouns.

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

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

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

ham (noun)	role player (noun)
meat cut from the thigh of a hog (usually smoked)	a theatrical performer
an unskilled actor who overacts	a person who makes deceitful pretenses
a licensed amateur radio operator

ham (verb)	role player (verb)
exaggerate one's acting