pale rider vs perishing

pale rider

noun

  • Death, the Grim Reaper or angel of death; and one of the Four Horsemen of the Apocalypse. 

perishing

noun

  • The act of something that perishes; decay or destruction. 

adj

  • Extreme; used of environmental or bodily conditions. 

  • Extremely cold. 

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