chief executive vs prexy

chief executive

noun

  • The president of the United States. 

  • Chief executive officer. 

  • The head of government of Hong Kong 

  • The head of government of Macau 

  • The governor of a U.S. state. 

prexy

noun

  • A president, especially of a college or university. 

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