Hadean vs nether

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. 

nether

adj
  • Lying beneath, or conceived as lying beneath, the Earth’s surface. 

  • Lower; under. 

verb
  • To shrink or huddle, as with cold; be shivery; tremble. 

  • To depreciate; disparage; undervalue. 

  • To constrict; straiten; confine; restrict; suppress; lay low; keep under; press in upon; vex; harass; oppress. 

  • To bring or thrust down; bring or make low; lower; abase; humble. 

  • To pinch or stunt with cold or hunger; check in growth; shrivel; straiten. 

noun
  • Oppression; stress; a withering or stunting influence. 

  • A trouble; a fault or dislocation in a seam of coal. 

adv
  • Down; downward. 

  • Low; low down. 

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