dismal vs sombrous

dismal

adj

  • Causing despair; gloomy and bleak. 

  • Depressing, dreary, cheerless. 

  • Disastrous, calamitous 

  • Disappointingly inadequate. 

sombrous

adj

  • Gloomy; sombre. 

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