exedra vs hermitage

exedra

noun
  • A semicircular recess, with stone benches, used as a place for discussion. 

  • A curved bench with a high back. 

hermitage

noun
  • A place of seclusion. 

  • A house or dwelling where a hermit lives. 

  • A period of seclusion. 

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