flying dragon vs gliding lizard

flying dragon

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

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

  • Any lizard in the genus Draco. 

gliding lizard

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