I would flip jackass and dickhead around. A dickhead does not have to be stupid, but is more reckless than an asshole. And a jackass can be intentionally a jackass, but most of the time is just an idiot.

Also, an asshole is more clearly intentional/malicious, whereas a dickhead could be oblivious or unacceptably inconsiderate.

Interesting. I wonder if that changes regionally.

my own personal interpretations based entirely on vibes are as follows

asshole: the anatomical opening at the end of the digestive tract, commonly known as the anus in human biology.

jackass: a male donkey belonging to the equine family, often characterized by long ears and a stubborn temperament.

dickhead: the upper part of the penis, specifically referring to the glans or head of the male reproductive organ.

I agree with this except dickhead to me is someone who is rude for no reason and that’s it.