prexy vs rector

prexy

noun
  • A president, especially of a college or university. 

rector

noun
  • A headmaster in various educational institutions, e.g. a university. 

  • A priest or bishop who is in charge of a parish or in an administrative leadership position in a theological seminary or academy. 

  • In the Anglican Church, a cleric in charge of a parish and who owns the tithes of it. 

  • In a Protestant church, a pastor in charge of a church with administrative and pastoral leadership combined. 

  • An official in Scottish universities who heads the university court and is elected by and represents the student body. 

  • In the Roman Catholic Church, a cleric with managerial as well as spiritual responsibility for a church or other institution. 

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