noun (n)

• noticeable heterogeneity(noun.attribute)

  Example:
  A diversity of possibilities.
  

  Synonym:
  diverseness, multifariousness, variety
  

  source: wordnet30
• the condition or result of being changeable(noun.attribute)

  source: wordnet30
• A state of difference; dissimilitude; unlikeness.(noun)

  source: webster1913