halcyon days vs joy

halcyon days

noun
  • A period of calm, usually in the past and often nostalgic. 

  • Period of calm during the winter, when storms do not occur. 

joy

noun
  • A feeling of extreme happiness or cheerfulness, especially related to the acquisition or expectation of something good. 

  • Anything that causes such a feeling. 

  • Luck or success; a positive outcome. 

verb
  • To feel joy, to rejoice. 

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