flying dragon vs hellion

flying dragon

noun
  • Used other than figuratively or idiomatically: see flying, dragon. 

  • Draco volans, a gliding lizard endemic to Southeast Asia. 

  • Any lizard in the genus Draco. 

hellion

noun
  • The larva of the dobsonfly. 

  • An evil person. 

  • An unruly, rowdy or mischievous person. 

adj
  • Cursed, ill-fated. 

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