pudden-head vs pudding head

pudden-head and pudding head both are nouns.

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

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

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

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