dismal vs hibernal

dismal

adj
  • Causing despair; gloomy and bleak. 

  • Depressing, dreary, cheerless. 

  • Disastrous, calamitous 

  • Disappointingly inadequate. 

hibernal

adj
  • Of or pertaining to winter; brumal or hiemal 

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