heavens vs seventh heaven

heavens

noun
  • The distant sky of the sun, moon, and stars. 

intj
  • An expression of surprise, contempt, outrage, disgust, boredom, or frustration. 

seventh heaven

noun
  • The outermost of the heavenly spheres; a dwelling of the angels. 

  • A state of great joy and satisfaction. 

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