rook vs diddle

rook is a noun but diddle is not a noun.

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

As verbs, rook and diddle are synonyms defined as:

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

rook (noun)	diddle (noun)
common gregarious Old World bird about the size and color of the American crow
(chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard

rook (verb)	diddle (verb)
deprive of by deceit	manipulate manually or in one's mind or imagination
	deprive of by deceit