noun (n)

• an event that happens

  kejadian itu berlaku

  Synonym:
  happening, natural event, occurrent
  

  source: wordnet30
• an instance of something occurring

  contoh dari sesuatu terjadi

  Example:
  A disease of frequent occurrence.
  The occurrence (or presence) of life on other planets.
  

  source: wordnet30
• A coming or happening; as, the occurence of a railway collision.

  sebuah datang atau terjadi; sebagai, i occurence/ aku dari kereta api tabrakan.

  source: webster1913