clerical vs rectorial

clerical

adj
  • Of or relating to the clergy. 

  • Of or relating to clerks or their work. 

noun
  • Clerical garments. 

  • A member of the clergy. 

rectorial

adj
  • Relating to a rector. 

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

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