capstan vs gudgeon

capstan

noun
  • A vertical cylindrical machine that revolves on a spindle, used to apply force to ropes, cables, etc. It is typically surmounted by a drumhead with sockets for levers used to turn it. 

  • A rotating spindle used to move recording tape through the mechanism of a tape recorder. 

gudgeon

noun
  • A circular or cylindrical fitting, often made of metal, into which a pin or pintle fits to create a hinge or pivoting joint. 

  • A small freshwater fish, Gobio gobio, that is native to Eurasia. 

  • Any of various similar small fish of the family Eleotridae, often used as bait. 

  • In a vessel with a stern-mounted rudder: the fitting into which the pintle of the rudder fits, allowing the rudder to swing freely. 

  • Other fish, similar in appearance, principally in families Butidae and Eleotridae, but also in others. 

  • Cottus bairdii, more widely known as mottled sculpin. 

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