cessation vs happy hour

cessation

noun
  • A ceasing or discontinuance, for example of an action, whether temporary or final. 

happy hour

noun
  • A time of day, usually in the afternoon or early evening, when a bar or pub offers its drinks at a discounted price. 

  • Any small gathering, usually in the afternoon or early evening, set aside to relax and have a drink. 

  • Flowers. 

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