crispy vs potato crisp

crispy

noun
  • The well-baked fat on the surface of a piece of roasted meat. 

adj
  • Having a crisp texture; brittle yet tender. 

potato crisp

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

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