tomfool vs saphead

tomfool and saphead both are nouns.

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

As nouns, tomfool and saphead are synonyms defined as:

Other synonyms of tomfool include fool, muggins, sap.

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