noun (n)

• an event that is a beginning; a first part or stage of subsequent events(noun.event)

  Synonym:
  inception, origin
  

  source: wordnet30
• the act of starting something for the first time; introducing something new(noun.act)

  Synonym:
  creation, foundation, founding, initiation, innovation, instauration, institution, introduction
  

  source: wordnet30
• The act or process of bringing or coming into existence; first production.(noun)

  source: webster1913