Which simple machine is a winch?
As wikipedia points out, the list of six simple machines is somewhat arbitrary and traces back to the Renaissance. You could reduce the traditional list by considering the wedge to be a moving inclined plane. The screw could be considered a helical inclined plane. The wheel and axle and pulley can be considered circular levers, which leaves only the lever and the inclined plane as the most basic simple machines. So calling a winch either a specialized form of lever or a wheel and axle are both acceptable.
