Friend vs butty

Friend

noun
  • A Quaker; a member of the Society of Friends. (See also Friends.) 

  • Brand name of a spring-loaded camming device, now used to refer to any such device, often uncapitalized, as friend. 

name
  • A surname transferred from the common noun. 

butty

noun
  • A miner who works under contract, receiving a fixed amount per ton of coal or ore. 

  • A sandwich, usually with a hot savoury filling in a breadcake. The most common are chips, bacon, sausage and egg. 

  • Friend. 

  • A workmate. 

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