When a wheel and an axle are combined into one solid object, the result is an axle wheel. The steering wheel of a car is an example of an axle wheel. The axle of the steering wheel controls the car's front wheels. The axle wheel is a kind of a rotating lever. 

Axle wheels are also used in old faucets. Nowadays, faucets mostly use levers to control water flow. 


Steering wheels and faucets make use of the axle wheel.

Axle wheels can also be used to wind things. A large wheel has to be rotated for a longer distance than the axle itself, but rotating it requires less energy. 

A winch is an example of an axle wheel. The "wheel" of the wich is actually a lever that is rotated like a wheel. 


Winches also make use of the axle wheel.