rook vs Corvus frugilegus

rook and Corvus frugilegus both are nouns.

Word	Noun	Adjective	Verb	Adverb
rook	Yes	No	Yes	No
Corvus frugilegus	Yes	No	No	No

As nouns, rook and Corvus frugilegus are synonyms defined as:

rook and Corvus frugilegus: common gregarious Old World bird about the size and color of the American crow

rook (noun)	Corvus frugilegus (noun)
common gregarious Old World bird about the size and color of the American crow	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)	Corvus frugilegus (verb)
deprive of by deceit