pudden-head vs stupid

pudden-head and stupid both are nouns.

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

As nouns, pudden-head and stupid are synonyms defined as:

Other synonyms of pudden-head include dolt, dullard, pillock, poor fish, pudding head, stupe, stupid person.

pudden-head (noun)	stupid (noun)
a person who is not very bright	a person who is not very bright

pudden-head (adjective)	stupid (adjective)
	lacking or marked by lack of intellectual acuity
	lacking intelligence
	in a state of mental numbness especially as resulting from shock