role player vs shammer

role player and shammer both are nouns.

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

As nouns, role player and shammer are synonyms defined as:

Other synonyms of role player include fake, faker, fraud, imposter, impostor, pretender, pseud, pseudo, sham.

role player (noun)	shammer (noun)
a theatrical performer	a person who makes deceitful pretenses
a person who makes deceitful pretenses	someone shirking their duty by feigning illness or incapacity