melancholy vs morose

melancholy

adj
  • Affected with great sadness or depression. 

noun
  • Great sadness or depression, especially of a thoughtful or introspective nature. 

  • Black bile, formerly thought to be one of the four "cardinal humours" of animal bodies. 

morose

adj
  • Sullen, gloomy; showing a brooding ill humour. 

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