Beelzebub vs diablo

Beelzebub

name

  • A Canaanite deity worshipped at Ekron. 

  • Satan, the Devil. 

diablo

adj

  • diable, flavoured with hot spices 

noun

  • the devil 

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