noun (n)

• a piece of open land for recreational use in an urban area(noun.location)

  Synonym:
  common, green, park
  

  source: wordnet30
• a pasture subject to common use(noun.location)

  Synonym:
  common land
  

  source: wordnet30
• a class composed of persons lacking clerical or noble rank(noun.group)

  Synonym:
  commonality, commonalty
  

  source: wordnet30
• the common people(noun.group)

  Synonym:
  third estate
  

  source: wordnet30
• The mass of the people, as distinguished from the titled classes or nobility; the commonalty; the common people.(noun)

  source: webster1913