pudden-head vs simpleton

pudden-head and simpleton both are nouns.

Word	Noun	Adjective	Verb	Adverb
pudden-head	Yes	No	No	No
simpleton	Yes	No	No	No

As nouns, simpleton is a hypernym of pudden-head; that is, simpleton is a word with a broader meaning than pudden-head:

Other hypernyms of pudden-head include simple.

pudden-head (noun)	simpleton (noun)
a person who is not very bright	a person lacking intelligence or common sense