danger vs probability

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. 

probability

noun
  • An event that is likely to occur. 

  • The state of being probable; likelihood. 

  • A number, between 0 and 1, expressing the precise likelihood of an event happening. 

  • The relative likelihood of an event happening. 

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