Cimmerian vs Hadean

Cimmerian

adj
  • related to the prehistoric continent of Cimmeria 

  • Pertaining to the ancient Cimmerians. 

  • Characteristic of Cimmeria; especially describing particularly dense darkness etc. 

name
  • the language of the Cimmerians, possibly belonging to the Iranian branch 

noun
  • Any of the mythical people supposed to inhabit a land of perpetual darkness. 

  • the prophetic priestess presiding over the Apollonian Oracle at Cimmerium in Italy. 

  • one of the Cimmerii, ancient equestrian nomads of Indo-European origin 

Hadean

adj
  • Of, or relating to the geological eon. 

  • Pertaining to Hades or hell. 

name
  • The Hadean eon; part of the Precambrian supereon, spanning from around 4.6 to 4 billion years ago. 

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