defraud vs rook

defraud is not a noun while rook is a noun.

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

As verbs, defraud and rook are synonyms defined as:

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

defraud (noun)	rook (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

defraud (verb)	rook (verb)
deprive of by deceit	deprive of by deceit