Are they not the same thing? Does and all wheel drive apply to vehicles with more or less than 4 wheels?
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4×4, or 4WD, is a mode that can be activated and deactivated when needed. It ensures that all wheels rotate at the same speed, and all wheels are independently a driving force for the car. This improves traction, but introduces stresses to the wheels/tires/drive system when turning.
AWD is an always active system that diverts some of the power from the drive wheels to the other wheels. This helps with traction and stability, but doesn’t “lock” the wheels into synchronous rotation. It’s basically a halfway point between FWD and 4WD that’s a compromise on the benefits of each.
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