backstair vs cursed

backstair

adj
  • clandestine, secret or furtive 

noun
  • The backstairs (stairs at the rear of a building). 

cursed

adj
  • Frightening or unsettling. 

  • hateful; damnable; accursed 

  • Under some divine harm, malady, or other curse. 

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