Canadian goose vs goose

Canadian goose and goose both are nouns.

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

As nouns, goose is a hypernym of Canadian goose; that is, goose is a word with a broader meaning than Canadian goose:

Canadian goose: common greyish-brown wild goose of North America with a loud, trumpeting call
goose: web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks

Canadian goose (noun)	goose (noun)
common greyish-brown wild goose of North America with a loud, trumpeting call	web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks
	flesh of a goose (domestic or wild)
	a man who is a stupid incompetent fool