noun (n)

• unusualness as a consequence of not being well known(noun.attribute)

  Synonym:
  unfamiliarity
  Antonym:
  familiarity
  

  source: wordnet30
• (physics) one of the six flavors of quark(noun.cognition)

  Synonym:
  charm
  

  source: wordnet30
• the quality of being alien or not native(noun.attribute)

  Example:
  The strangeness of a foreigner.
  

  Synonym:
  curiousness, foreignness
  Antonym:
  nativeness
  

  source: wordnet30
• The state or quality of being strange (in any sense of the adjective).(noun)

  source: webster1913