collop vs potato crisp

collop

noun
  • A small piece, portion, or slice of something. 

  • A slice of meat. 

  • A roll or fold of flesh on the body. 

potato crisp

noun
  • A thin slice of potato that has been fried, typically packaged and sold as a snack. 

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