commonage vs municipality

commonage

noun
  • The condition of land that is held in common. 

  • The right to pasture animals on common land. 

  • Shared land; a common. 

municipality

noun
  • The governing body of such a district. 

  • A district with a government that typically encloses no other governed districts; a borough, city, or incorporated town or village. 

  • In Mexico and other Spanish- and Portuguese-speaking countries, second-level administrative divisions that may house one or more cities or towns whose head of government may be called mayors or, in Mexico, municipal presidents. 

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