betty vs waternut

betty

noun
  • A baked dessert made with alternating layers of sweetened fruit and buttered bread crumbs. 

  • An attractive woman; a babe. 

  • A short bar used by thieves to wrench doors open; a jimmy. 

waternut

noun
  • Synonym of jelly coconut 

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