primacy vs superintendency

primacy

noun
  • the office or dignity of an archbishop 

  • The state or condition of being prime or first, as in time, place, rank, etc. 

  • The office, rank, or character of a primate, it being the chief ecclesiastical station or dignity in a national church 

superintendency

noun
  • The condition of being a superintendent 

  • The act of superintending 

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