goose vs saphead

goose and saphead both are nouns.

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

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

Other hypernyms of goose include fool, muggins, sap, tomfool.

goose (noun)	saphead (noun)
web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks	a person who lacks good judgment
flesh of a goose (domestic or wild)
a man who is a stupid incompetent fool