goldbrick vs rip off

goldbrick is a noun but rip off is not a noun.

Word	Noun	Adjective	Verb	Adverb
goldbrick	Yes	No	Yes	No
rip off	No	No	Yes	No

As verbs, rip off is a hypernym of goldbrick; that is, rip off is a word with a broader meaning than goldbrick:

Other hypernyms of goldbrick include cheat, chisel.

goldbrick (noun)	rip off (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

goldbrick (verb)	rip off (verb)
avoid (one's assigned duties)	remove by pulling or ripping violently and forcefully
deprive of by deceit	take without the owner's consent
	deprive somebody of something by deceit