ardor vs ecstasy

ardor

noun
  • Great warmth of feeling; fervor; passion. 

  • Intense heat. 

  • Spirit; enthusiasm; passion. 

ecstasy

noun
  • Intense pleasure. 

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

  • 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. 

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