basilica vs hegumen

basilica

noun
  • A Roman Catholic church or cathedral with basilican status, an honorific status granted by the pope to recognize its historical, architectural, or sacramental importance. 

  • A Christian church building having a nave with a semicircular apse, side aisles, a narthex and a clerestory. 

hegumen

noun
  • The head of a monastery of the Eastern Orthodox Church or Eastern Catholic Churches. 

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