noun (n)

• the act of dwelling in or living permanently in a place (said of both animals and men)(noun.act)

  Example:
  He studied the creation and inhabitation and demise of the colony.
  

  Synonym:
  habitation, inhabitancy
  

  source: wordnet30
• The act of inhabiting, or the state of being inhabited; indwelling.(noun)

  source: webster1913