Tartarus vs hellfire

Tartarus

name
  • A dark and gloomy part of the realm of Hades, reserved for the damned and the wicked, such as the Titans; an equivalent of hell in Greek and Roman mythology. 

  • Any hellish place; a dark gloomy chasm or pit. 

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 Tartarus and hellfire occurred in a corpus of books? (source: Google Ngram Viewer )