Canadian goose vs Branta canadensis

Canadian goose and Branta canadensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Canadian goose	Yes	No	No	No
Branta canadensis	Yes	No	No	No

As nouns, Canadian goose and Branta canadensis are synonyms defined as:

Canadian goose and Branta canadensis: common greyish-brown wild goose of North America with a loud, trumpeting call

Other synonyms of Canadian goose include Canada goose, honker.

Canadian goose (noun)	Branta canadensis (noun)
common greyish-brown wild goose of North America with a loud, trumpeting call	common greyish-brown wild goose of North America with a loud, trumpeting call