despicable vs unforgivable

despicable

adj

  • Fit or deserving to be despised; contemptible; mean. 

noun

  • A wretched or wicked person. 

unforgivable

adj

  • Not forgivable; inexcusable. 

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