hedgeapple vs horseapple

hedgeapple

noun
  • The fruit of the Osage orange tree (Maclura pomifera), also known as the hedge tree. 

horseapple

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

  • A tree of this species. 

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