campfire vs inferno

campfire

noun
  • A fire at a campground or on a camping trip, often used for cooking, to provide light and heat, to drive away bugs, and as a focal point for sitting around in the evening and talking, telling stories, and singing. 

inferno

noun
  • A large fire; a conflagration. 

  • A place or situation resembling Hell. 

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