noun (n)

• (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work(noun.attribute)

  Synonym:
  entropy, s
  

  source: wordnet30
• the quality of lacking any predictable order or plan(noun.attribute)

  Synonym:
  haphazardness, noise, stochasticity
  

  source: wordnet30