chancellery vs commissioner

chancellery

noun
  • The office or staff of a chancellor 

  • The rank or post of a chancellor 

  • The building in which such an office is situated 

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. 

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