grafter vs second-story operator

grafter

noun
  • An instrument by which grafting is facilitated. 

  • One who inserts scions on other stocks, or propagates fruit by engrafting. 

  • Someone who works in market stalls. 

  • a hard worker who puts in long hours 

  • A corrupt person, one who receives graft. 

  • The original tree from which a scion has been taken for grafting upon another tree. 

second-story operator

How often have the words grafter and second-story operator occurred in a corpus of books? (source: Google Ngram Viewer )