exedra vs tokonoma

exedra

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

  • A curved bench with a high back. 

tokonoma

noun
  • A recess in a domestic interior in which a hanging scroll and a flower arrangement is displayed 

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