shammer vs skulker

shammer and skulker both are nouns.

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

As nouns, shammer and skulker are synonyms defined as:

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

Other synonyms of shammer include malingerer.

shammer (noun)	skulker (noun)
a person who makes deceitful pretenses	someone waiting in concealment
someone shirking their duty by feigning illness or incapacity	someone shirking their duty by feigning illness or incapacity