Difference between Dunderhead and Dunce

DUNDERHEAD vs DUNCE: NOUN

One backward in book learning; a child or other person dull or weak in intellect; a dullard; a dolt.
A dull-witted, stupid person; a dolt; an ignoramus.
Hence A caviling, sophistical person; a senseless caviler.
[capitalized] A disciple or follower of John Duns Scotus (see etymology); a Dunce-man; a Scotist.
A stupid person; a dolt.
These words are used to express a low opinion of someone's intelligence

Dimwit, Moron, Nincompoop, Dolt, Stupidest, Muttonhead, Loggerhead, Hammerhead, Bonehead, Numskull, Knucklehead, Blockhead, Dunce, Lunkhead, Shithead

Halfwit, Twat, Idiot, Ignoramus, Moron, Muttonhead, Loggerhead, Hammerhead, Lunkhead, Bonehead, Numskull, Knucklehead, Shithead, Blockhead, Dunderhead

Nitwit, Dimwit, Moron, Nincompoop, Dolt, Stupidest, Loggerhead, Hammerhead, Bonehead, Numskull, Knucklehead, Blockhead, Dunce, Lunkhead, Shithead

Putz, Halfwit, Twat, Idiot, Ignoramus, Moron, Loggerhead, Hammerhead, Lunkhead, Bonehead, Numskull, Knucklehead, Shithead, Blockhead, Dunderhead

Grace who recently dismally failed her english degree, repeatedly re-writting for 8 years until University of London expelled her for being a dunderhead.
Dimwit Donnie, The Dunderhead, Clown in Chief, and the most accurate, The Idiot Apprentice.
Now it is clear to all that the boy is just a power-hungry political dunderhead.
Grab a stone you dunderhead if at-first you do not succeed.

What a pitch of glory for the dunce who had been shamed into learning Greek verbs at Harrow!
Yosuke in particular has a bad reputation for being a dunce.
Jpaneirarp, a Dunce, a Blockhead, an aukward Fellow.
And all the same thing you show personal skepticism things, then will be dunce.
Wood catch is after you may thrive convicted lot on your dunce.
Have you ever noticed that party hats look just like dunce caps?
Excels a dunce, that has been kept at home.
Weld that dunce cap to your pointy little head.
Dunce cap: Fail three classes in a row.
May dunce by dunce be whistled off my hands!