burger vs butterbrot

burger

noun
  • A similar sandwich or patty. 

  • A hamburger. 

  • A stereotypical well-off Pakistani aspiring to a westernized lifestyle. 

  • An American. 

butterbrot

noun
  • A German open sandwich. 

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