skulking vs malingering

skulking and malingering both are nouns.

Word	Noun	Adjective	Verb	Adverb
skulking	Yes	No	No	No
malingering	Yes	No	No	No

As nouns, skulking and malingering are synonyms defined as:

skulking and malingering: evading duty or work by pretending to be incapacitated

skulking (noun)	malingering (noun)
evading duty or work by pretending to be incapacitated	evading duty or work by pretending to be incapacitated