I find myself wanting to call them gears but that dang Rick Ehrenberg wrote that gears mesh with other gears, sprockets are driven by chains.
He was a stickler for Mopar specific terminology.
Spindles? Nah...the factory called them Knuckles.
Drive shaft? No....Propeller shaft.
Clutch fan? No...Thermal drive fan.
There are others.
Posi = Sure Grip.
Z-bar = Torque Shaft.
Emergency brake = Parking Brake.
Can you recall any of the others?