hard luck vs unpleasantness

hard luck

noun
  • Bad luck. 

intj
  • Expressed to someone suffering misfortune. 

unpleasantness

noun
  • An unpleasant behaviour, occurrence, etc. 

  • The property of being unpleasant or disagreeable. 

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