Death vs Grim Reaper

Death

name
  • The personification of death, often a skeleton with a scythe, and one of the four horsemen of the apocalypse. 

Grim Reaper

name
  • A personification of Death as an old man, or a skeleton, carrying a scythe, taking souls to the afterlife. 

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