The height of the pump increases the distance that the force will do work over (or how much kinetic energy the force will impart to a molecule), akin to how vol

The height of the pump increases the distance that the force will do work over (or how much kinetic energy the force will impart to a molecule), akin to how voltage will impart kinetic energy to the electron. Potential energy due to gravity is mgh. A pump adds more force to g. A tower increases h. What's nice about the pump is that it removes the special spatial directionality of gravity. In electricity, Earth is a voltage point-of- reference but not a spatial directional reference for computing forces.