Heinz 57 vs mixed-race

Heinz 57

adj
  • Having ancestry of many different origins; to be of mixed race or breed. 

  • Being a complete mix; containing parts of many different origins. 

noun
  • A dog of miscellaneous ancestry; a mutt. 

  • A variety of draw poker in which 5s and 7s are wild cards. 

mixed-race

adj
  • Having genetic characteristics of two or more different races. 

How often have the words Heinz 57 and mixed-race occurred in a corpus of books? (source: Google Ngram Viewer )