barnacle goose vs goose

barnacle goose and goose both are nouns.

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

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

barnacle goose: European goose smaller than the brant; breeds in the far north
goose: web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks

barnacle goose (noun)	goose (noun)
European goose smaller than the brant; breeds in the far north	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