capstan vs spinnel

capstan

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

  • 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. 

spinnel

noun
  • spindle 

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