canvasback vs Aythya valisineria

canvasback and Aythya valisineria both are nouns.

Word	Noun	Adjective	Verb	Adverb
canvasback	Yes	No	No	No
Aythya valisineria	Yes	No	No	No

As nouns, canvasback and Aythya valisineria are synonyms defined as:

canvasback and Aythya valisineria: North American wild duck valued for sport and food

Other synonyms of canvasback include canvasback duck.

canvasback (noun)	Aythya valisineria (noun)
North American wild duck valued for sport and food	North American wild duck valued for sport and food