rook vs defraud

rook is a noun but defraud is not a noun.

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

As verbs, rook and defraud are synonyms defined as:

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

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