Elysium vs the empyrean

Elysium

adj
  • of or pertaining to Elysium 

  • blissful; euphoric 

name
  • A region in the northern hemisphere of Mars. 

  • The home of the blessed after death. 

  • A place or state of ideal happiness; paradise. 

the empyrean

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