forger vs fourflusher

forger

noun
  • A person who creates forgeries, falsifies documents with intent to defraud, e.g. to create a false will or illicit copies of currency; counterfeiter. 

  • A person who forges metals. 

fourflusher

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