bureau vs chief minister

bureau

noun
  • An administrative unit of government; office. 

  • An office (room where clerical or professional duties are performed). 

  • An organization or office for collecting or providing information or news. 

  • A chest of drawers for clothes. 

  • A desk, usually with a cover and compartments that are located above the level of the writing surface rather than underneath, and often used for storing papers. 

chief minister

noun
  • The leader of government in many semi-autonomous and constituent federal states. 

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