buttock vs ham hock

buttock

noun
  • Each of the two large fleshy halves of the posterior part of the body between the base of the back, the perineum and the top of the legs. 

  • The convexity of a ship behind, under the stern. 

ham hock

noun
  • The cut of meat at the joint between the leg and foot of a hog. 

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