brilliance vs sadness

brilliance

noun
  • The quality of being exceptionally effulgent (giving off light). 

  • The quality of having extraordinary mental capacity. 

  • Magnificence; resplendence. 

sadness

noun
  • The state or emotion of being sad. 

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

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