melancholic vs threnodial

melancholic

noun
  • A person who is habitually melancholy. 

adj
  • Pertaining to the melancholic temperament or its associated personality traits. 

  • Filled with or affected by melancholy—great sadness or depression, especially of a thoughtful or introspective nature. 

threnodial

adj
  • Pertaining or similar to a threnody. 

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