dog's tongue vs loin

dog's tongue

noun
  • The plant hound's tongue. 

loin

noun
  • Any of several cuts of meat taken from this part of an animal 

  • The part of the body (of humans and quadrupeds) at each side of the backbone, between the ribs and hips 

How often have the words dog's tongue and loin occurred in a corpus of books? (source: Google Ngram Viewer )