aeviternity vs afterworld

aeviternity

noun
  • Synonym of eternity (“existence without end”) 

  • Synonym of aevum (“the temporal mode of existence between time and eternity, said to be experienced by angels, saints, and celestial bodies (which medieval astronomy believed to be unchanging)”) 

afterworld

noun
  • A supposed world that is entered after death; the realm of the afterlife. 

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