hideaway vs sanctum

hideaway

noun
  • a hiding place, somewhere one can go to get away from other people 

adj
  • Capable of being stored out of sight when not in use. 

sanctum

noun
  • A place set apart, as with a sanctum sanctorum; a sacred or private place; a private retreat or workroom. 

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