archimandrite vs father superior

archimandrite

noun
  • The superior of a large monastery, or group of monasteries, in the Orthodox Church. 

  • An honorary title sometimes given to a monastic priest. 

father superior

noun
  • a friar or monk in charge of a monastery, priory or convent; an abbot or a prior 

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