commissioner vs legate

commissioner

noun
  • An official in charge of a government department, especially a police force. 

  • Someone commissioned to perform certain duties. 

  • A member of a commission. 

  • Someone who commissions something. 

legate

noun
  • The deputy of a provincial governor or general in ancient Rome. 

  • An ambassador or messenger. 

  • A deputy representing the pope, specifically a papal ambassador sent on special ecclesiastical missions. 

verb
  • To leave as a legacy. 

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