I must strongly disagree. Establishing a meaningful and COMMON nomenclature is always a must for being able to communicate properly
Aniss, my point was that it is usually the case that understanding something is much more important than knowing its correct name.
However I'd still very much appreciate some input on the other part:
I would amend your summary on servos as follows:
4) A motor controller (typically an H-bridge)
5) a servo feedback circuit that reads the output position from the pot and drives the motor controller to correct deviation from the commanded position.