dispiriting vs grim

dispiriting

adj
  • Lowering the morale of; making despondent or depressive; disheartening. 

grim

adj
  • Dismal and gloomy, cold and forbidding. 

  • Rigid and unrelenting. 

  • Ghastly or sinister. 

  • Disgusting; gross. 

verb
  • To make grim; to give a stern or forbidding aspect to. 

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