saphead vs goose

saphead and goose both are nouns.

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

As nouns, goose is a hyponym of saphead; that is, goose is a word with a more specific, narrower meaning than saphead:

saphead (noun)	goose (noun)
a person who lacks good judgment	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