danger vs triviality

danger

noun
  • An instance or cause of likely harm. 

  • The stop indication of a signal (usually in the phrase "at danger"). 

  • Exposure to likely harm; peril. 

triviality

noun
  • The quality of being trivial or unimportant. 

  • Something which is trivial or unimportant. 

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