motor vs promoter

motor

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

  • 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. 

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

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. 

promoter

noun
  • An accelerator of catalysis that is not itself a catalyst. 

  • One who promotes entertainment events or goods. 

  • The section of DNA that controls the initiation of RNA transcription as a product of a gene. 

  • One who promotes. 

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