forcemeat vs hamburg

forcemeat

noun
  • An emulsion of fat and comminuted meat (which has been subject to puréeing, grinding, sieving, chopping finely) optionally mixed with other flavour carriers and either served up alone or used as a stuffing. 

hamburg

noun
  • ground beef; hamburger meat 

  • hamburger (food) 

verb
  • To annoy. 

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