keyboarder vs typewriter

keyboarder

noun
  • Someone who keyboards; a typist. 

  • Synonym of keyboardist 

typewriter

noun
  • A device, at least partially mechanical, used to print text by pressing keys that cause type to be impressed through an inked ribbon onto paper. 

  • A prank in which fingers are jabbed roughly onto someone's chest followed by striking them over the ear in imitation of using an old-fashioned typewriter. 

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