deadland vs eon

deadland

noun
  • The afterlife, especially in belief systems that do not include reward or punishment such as heaven and hell. 

  • Wasteland; a desert or other place that does not support life. 

  • A place of death; a deadly land. 

eon

noun
  • Eternity. 

  • A period of 1,000,000,000 years. 

  • The longest geochronologic unit, being a period of hundreds of millions of years; subdivided into eras. 

  • A spirit being emanating from the Godhead. 

  • A long period of time. 

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