distressing vs unfortunate

distressing

adj
  • Causing distress; upsetting; distressful. 

unfortunate

adj
  • marked or accompanied by or resulting in misfortune 

  • not favored by fortune 

noun
  • An unlucky person; one who has fallen into bad circumstances. 

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