malingerer vs shammer

malingerer and shammer both are nouns.

Word	Noun	Adjective	Verb	Adverb
malingerer	Yes	No	No	No
shammer	Yes	No	No	No

As nouns, malingerer and shammer are synonyms defined as:

malingerer and shammer: someone shirking their duty by feigning illness or incapacity

Other synonyms of malingerer include skulker.

malingerer (noun)	shammer (noun)
someone shirking their duty by feigning illness or incapacity	a person who makes deceitful pretenses
	someone shirking their duty by feigning illness or incapacity