despondency vs sadness

despondency

noun
  • A feeling of depression or disheartenment. 

  • The loss of hope or confidence; despair or dejection. 

sadness

noun
  • The state or emotion of being sad. 

  • An event in one's life that causes sadness. 

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