long shot vs uncertain

long shot

noun
  • Something unlikely; something that has little chance of happening or working. 

  • A master shot, the primary wide shot of a scene into which the closeups will be edited later. 

  • A shot fired at a distant target. 

uncertain

noun
  • Something uncertain. 

adj
  • Not certain; unsure. 

  • Not yet determined; undecided. 

  • Variable and subject to change. 

  • Fitful or unsteady. 

  • Unpredictable or capricious. 

  • Not known for certain; questionable. 

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