bright spot vs wind-up

bright spot

noun
  • A good part of something that is otherwise fairly bad or unpleasant. 

  • Used other than figuratively or idiomatically: see bright, spot. 

wind-up

noun
  • A humorous attempt to fool somebody, a practical joke in which the victim is encouraged to believe something untrue. 

  • A punch line of a joke or comedy routine. 

  • The phase of making a pitch where the pitcher moves his or her arm backwards before throwing the ball. 

  • The end or conclusion of something. 

  • A circular hand gesture, supposed to represent the winding on of film, used to signal to a performer to finish quickly. 

adj
  • Needing to be wound up in order to function. 

How often have the words bright spot and wind-up occurred in a corpus of books? (source: Google Ngram Viewer )