aggravating circumstance vs danger

aggravating circumstance

noun
  • A factor that increases the culpability or deleterious consequences of a wrongful act. 

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. 

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