federation vs institution

federation

noun
  • Any society or organisation formed from separate groups or bodies. 

  • A collection of network or telecommunication providers that offer interoperability. 

  • Act of joining together into a single political entity. 

  • Array of nations or states that are unified under one central authority which is elected by its members. 

adj
  • Of an architectural style popular around the time of federation. 

institution

noun
  • The building or buildings which house such an organization. 

  • Any long established and respected place or business. 

  • The act of instituting something. 

  • A custom or practice of a society or community. 

  • A person long established in a place, position, or field. 

  • A mental institution. 

  • A long established and respected organization, particularly one involved with education, public service, or charity work. 

  • The act by which a bishop commits a cure of souls to a priest. 

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