Difference between Cave Dweller and Caveman

CAVE DWELLER vs CAVEMAN: NOUN

Someone who lives in a cave
One who behaves like a caveman.
Prehistoric human who lived in caves, a caveman or cavewoman
Pl. [capitalized] A name given to the Bohemian Brethren (which see, under Bohemian), because they hid in caves to escape persecution.
One who dwells in a cave; a troglodyte; specifically, a member of the prehistoric race of men who dwelt in natural caves, subsisting on shell-fish and wild animals.
One that dwells in a cave, especially a prehistoric human.
Someone who dwells in a cave

Someone who lives in a cave
A man with old fashioned or backward opinions, particularly with regard to women.
A brutish or savage person.
An early human or closely related species, popularly held to reside in caves.
Same as cave-dweller, 1.
A man who is crude or ill-mannered, especially toward women.
A prehistoric or primitive human living in caves.
Someone who dwells in a cave

Bunyip, Quiddity, Tanuki, Wanderer, Shaytan, Troglodytic, Jerboa, Hermit, Hermitic, Insectivore, Dweller, Primitive, Cave man, Caveman, Troglodyte

Monkey, Mesolithic, Gorilla, Brontosaurus, Tyrannosaurus rex, Homo erectus, Woolly mammoth, Ape, Paleolithic, Prehistoric, Neanderthal, Cave, Cave man, Cave dweller, Troglodyte

Creature, Bunyip, Quiddity, Tanuki, Wanderer, Shaytan, Troglodytic, Jerboa, Hermit, Hermitic, Insectivore, Dweller, Primitive, Caveman, Troglodyte

Prehistory, Monkey, Mesolithic, Gorilla, Brontosaurus, Tyrannosaurus rex, Homo erectus, Woolly mammoth, Ape, Paleolithic, Prehistoric, Neanderthal, Cave, Cave dweller, Troglodyte

Who or what is the subject of this writing: a famous mathematician, a prehistoric cave dweller, a reaction to a specific event?

Primal features a caveman at the dawn of evolution.
Sounds so simple a caveman could do it, right?
Caveman Chili right before its going into the crockpot.
This goes all the way back to caveman days.
Its so easy a caveman can do it.
So easy even a caveman can do it.
So easy a caveman can figure it out.
Well, that explains the presence of Captain Caveman.
ITS SO EASY A CAVEMAN CAN DO IT!
He's visited by the caveman and the caveman explains the situation to him and sends him back to the party.