gander vs goose

gander and goose both are nouns.

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

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

gander: mature male goose
goose: web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks

gander (noun)	goose (noun)
mature male goose	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