kiss of death vs unfortunate

kiss of death

noun
  • Something that may seem good and favourable but that actually brings ruin to hopes, plans, etc. 

  • A kiss on the cheek that signifies the death of the receiver, as delivered by a mob boss or one with such influence. 

unfortunate

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

adj
  • marked or accompanied by or resulting in misfortune 

  • not favored by fortune 

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