bethel vs feretory

bethel

noun
  • A holy place. 

  • A chapel, especially one for sailors, converted from an old ship. 

feretory

noun
  • A receptacle that houses relics of saints. 

  • An area of a church where relics are kept. 

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