noun (n)

• an interruption in the intensity or amount of something(noun.event)

  Synonym:
  hiatus, reprieve, respite, suspension
  

  source: wordnet30
• the act of abating(noun.act)

  Example:
  Laws enforcing noise abatement.
  

  source: wordnet30
• The act of abating, or the state of being abated; a lessening, diminution, or reduction; removal or putting an end to; as, the abatement of a nuisance is the suppression thereof.(noun)

  source: webster1913