Azazel vs diablo

Azazel

name

  • Satan. 

  • The name of Iblis. 

  • A fallen angel in some traditions of Judaism and Christianity. 

diablo

noun

  • the devil 

adj

  • diable, flavoured with hot spices 

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