Hades vs hellfire

Hades

name
  • The god of the underworld and ruler of the dead, son of Cronus and Rhea, brother of Zeus and Poseidon. 

  • Hell. 

  • The underworld, the domain of Hades, by transference from its god. 

  • In the Septuagint Bible, the Greek translation of Sheol. 

  • Hell as a waiting place for damned souls before the Last Judgement, after which they may be cast in Gehenna. 

hellfire

adj
  • Of or relating to a violent, apocalyptic and ultimate day of reckoning and judgment; usually characterizing a form of Christian preaching. 

intj
  • hell; damn; blast 

noun
  • The fire of Hell. 

  • Fire produced by the Devil, or a similar supernatural creature connected to Hell. 

  • A fire that burns with unusual heat or ferocity. 

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