mechanism vs motor

mechanism

noun
  • Any process of, or system designed to manage useful energy conversion. 

  • Any combination of cams, gears, links, belts, chains and logical mechanical elements. 

  • A mental, physical, or chemical process. 

  • The theory that all natural phenomena can be explained by physical causes. 

  • Any mechanical means for the conversion or control of motion, or the transmission or control of power. 

  • A group of entities, such as objects, that interact together. 

motor

noun
  • A machine or device that converts other energy forms into mechanical energy, or imparts motion. 

  • The fermenting mass of fruit that is the basis of pruno, or "prison wine". 

  • A motor car, or automobile, even a goods vehicle. 

  • A source of power for something; an inspiration; a driving force. 

  • Any protein capable of converting chemical energy into mechanical work. 

verb
  • To rotate a jet engine or turboprop using the engine's starter, without introducing fuel into the engine. 

  • To progress at a brisk pace. 

  • To leave. 

adj
  • Relating to motor cars. 

  • Propelled by an internal combustion engine (as opposed to a steam engine or turbine). 

  • Relating to the ability to move. 

How often have the words mechanism and motor occurred in a corpus of books? (source: Google Ngram Viewer )