dynamo vs putt-putt

dynamo

noun
  • An energetic person. 

  • An electricity generator; a dynamo-electric machine. 

  • The mechanism by which a celestial body, such as the Earth or a star, generates a magnetic field. 

putt-putt

noun
  • An informal form of golf, played with a putter on a short course featuring novelty obstacles. 

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