county vs municipality

county

noun
  • A jail operated by a county government. 

  • An administrative region of various countries, including Bhutan, Canada, China, Croatia, Ireland, Japan, New Zealand, Norway, Poland, Romania, South Korea, Sweden, the United Kingdom, and 48 of the 50 United States (excluding Alaska and Louisiana). 

  • A definitive geographic region, without direct administrative functions. 

  • The land ruled by a count or a countess. 

adj
  • Characteristic of a ‘county family’; representative of the gentry or aristocracy of a county. 

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 county and municipality occurred in a corpus of books? (source: Google Ngram Viewer )