representative government vs republic

representative government

noun
  • A government where citizens elect people to represent them and make laws on their behalf, instead of always voting directly on laws and other government actions. 

republic

noun
  • A state where sovereignty rests with the people or their representatives, rather than with a monarch or emperor; a country with no monarchy. 

  • One of the subdivisions constituting Russia. See oblast. 

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