A driveshaft is a long tube of steel that is to a car’s transmission at one end and the wheels at the other. It the mechanical power from the transmission to the other components of the vehicle.
A U-joint, or universal joint, a flexible pivot point that transmits power allowing for varying angles of the driveshaft.
CV joints, or constant-velocity joints, are part of the driveshaft. These joints designed to be able to bend in any direction while continuing to turn the drive wheels at a constant velocity.
The differential is where the power its last stop before spinning the wheels.
Axle shafts a single rotating shaft, on either side of the differential, which delivers power from the final drive assembly to the drive wheels.