noun (n)

• any foodstuff made by combining different ingredients(noun.food)

  Example:
  He volunteered to taste her latest concoction.
  

  Synonym:
  intermixture, mixture
  

  source: wordnet30
• an occurrence of an unusual mixture(noun.event)

  Example:
  It suddenly spewed out a thick green concoction.
  

  source: wordnet30
• the invention of a scheme or story to suit some purpose(noun.cognition)

  Example:
  His testimony was a concoction.
  She has no peer in the concoction of mystery stories.
  

  source: wordnet30
• the act of creating something (a medicine or drink or soup etc.) by compounding or mixing a variety of components(noun.act)

  Synonym:
  confection
  

  source: wordnet30
• A change in food produced by the organs of nutrition; digestion.(noun)

  source: webster1913