god-awful vs heartbreaking

god-awful

adj

  • Extremely awful, unpleasant or dreadful. 

heartbreaking

adj

  • That causes great grief, anguish or distress. 

noun

  • The breaking of a heart; great grief, anguish or distress. 

How often have the words god-awful and heartbreaking occurred in a corpus of books? (source: Google Ngram Viewer )