noun (n)

• an abstract or general idea inferred or derived from specific instances(noun.cognition)

  Synonym:
  concept, construct
  Antonym:
  misconception
  

  source: wordnet30
• the act of becoming pregnant; fertilization of an ovum by a spermatozoon(noun.act)

  source: wordnet30
• the event that occurred at the beginning of something(noun.event)

  Synonym:
  creation
  

  source: wordnet30
• the creation of something in the mind(noun.cognition)

  Synonym:
  design, excogitation, innovation, invention
  

  source: wordnet30
• The act of conceiving in the womb; the initiation of an embryonic animal life.(noun)

  source: webster1913