What is the meaning of control knob?
A control knob is a rotary device used to provide manual input adjustments to a mechanical/electrical system when grasped and turned by a human operator, so that differing extent of knob rotation corresponds to different desired input.
What is unstoppable in Latin?
The Latin word for 'unstoppable' is inexorable, which comes from the Latin prefix in- (meaning 'not') and the root exōrābilis (meaning 'that may be moved or persuaded by entreaty; exorable'). In other words, something that is inexorable cannot be stopped or dissuaded.