apple pear vs choke pear

apple pear

noun
  • A fruit of a northeast-Asian species of pear with a crisp, juicy texture and an apple-like shape. 

  • Pyrus pyrifolia, the tree that bears this fruit. 

choke pear

noun
  • A kind of pear with a rough, astringent taste, difficult to swallow. 

  • A metal torture device to be inserted into the body, consisting of a usually pear-shaped piece divided into spoon-like segments that can be spread apart by turning a screw. 

How often have the words apple pear and choke pear occurred in a corpus of books? (source: Google Ngram Viewer )