motor vs winter rat

motor

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

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

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

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

  • 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. 

winter rat

noun
  • An old, unattractive automobile, purchased for little money, to be driven during brutal Great Lakes winters while the owner's "good" car remains garaged and protected from corrosive road salt for the season. 

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