diocesan vs rectorial

diocesan

adj

  • Pertaining to a diocese. 

noun

  • The bishop of a diocese. 

  • An inhabitant of a diocese. 

rectorial

adj

  • Relating to a rector. 

noun

  • The events associated with the appointment of a new rector. 

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