collop vs potato cake

collop

noun
  • A roll or fold of flesh on the body. 

  • A slice of meat. 

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

potato cake

noun
  • A savoury flat cake made from flour and mashed potatoes, often fried or baked. 

  • A fried potato; a potato scallop. 

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