bodark vs horseapple

bodark

noun
  • The Osage orange tree or its wood. 

horseapple

noun
  • A tree of this species. 

  • The large, wrinkled, inedible fruit of the American tree Maclura pomifera. 

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