noun (n)

• being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)(noun.state)

  Synonym:
  addiction, dependence, dependency, habituation
  

  source: wordnet30
• the state of relying on or being controlled by someone or something else(noun.state)

  Synonym:
  dependence, dependency
  

  source: wordnet30