goldbrick vs diddle

goldbrick is a noun but diddle is not a noun.

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

As verbs, goldbrick and diddle are synonyms defined as:

Other synonyms of goldbrick include bunco, con, defraud, hornswoggle, mulct, nobble, rook, scam, short-change, swindle, victimize.

goldbrick (noun)	diddle (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)	diddle (verb)
avoid (one's assigned duties)	manipulate manually or in one's mind or imagination
deprive of by deceit	deprive of by deceit