shirk vs goldbrick

shirk is not a noun while goldbrick is a noun.

Word	Noun	Adjective	Verb	Adverb
shirk	No	No	Yes	No
goldbrick	Yes	No	Yes	No

As verbs, shirk and goldbrick are synonyms defined as:

Other synonyms of shirk include fiddle, shrink from.

shirk (noun)	goldbrick (noun)
	anything that is supposed to be valuable but turns out to be worthless
	a brick-shaped block that looks like gold but is not
	an idle worthless person
	a soldier who performs his duties without proper care or effort

shirk (verb)	goldbrick (verb)
avoid dealing with	avoid (one's assigned duties)
avoid (one's assigned duties)	deprive of by deceit