sad vs sorry

sad

adj
  • Poor in quality, bad; shameful, deplorable; later, regrettable, poor. 

  • Soggy (to refer to pastries). 

  • Causing sorrow; lamentable. 

  • Of colours: dark, deep; later, sombre, dull. 

  • Appearing sorrowful. 

  • Feeling sorrow; sorrowful, mournful. 

  • Unfashionable; socially inadequate or undesirable. 

sorry

adj
  • Poor, pitifully sad or regrettable. 

  • Grieved or saddened, especially by the loss of something or someone. 

  • Pathetic; contemptibly inadequate. 

  • Regretful or apologetic for one's actions. 

noun
  • The act of saying sorry; an apology. 

intj
  • Expresses regret, remorse, or sorrow. 

  • Used as a request for someone to repeat something not heard or understood clearly. 

  • Said as a request to pass somebody. 

  • Used to correct oneself in speech. 

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