ecstasy vs halcyon days

ecstasy

noun
  • A trance, frenzy, or rapture associated with mystic or prophetic exaltation. 

  • Intense pleasure. 

  • The drug MDMA, a synthetic entactogen of the methylenedioxyphenethylamine family, especially in a tablet form. 

  • A state of emotion so intense that a person is carried beyond rational thought and self-control. 

verb
  • To experience intense pleasure. 

  • To cause intense pleasure in. 

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. 

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