primacy vs upper hand

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 

upper hand

noun
  • Advantage or control. 

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