noun (n)

• a monthly payment made to someone who is retired from work(noun.possession)

  Synonym:
  old-age pension, retirement benefit, retirement check, retirement fund, retirement pension
  

  source: wordnet30
• the property of being out of date and not current(noun.attribute)

  Synonym:
  obsoleteness
  

  source: wordnet30
• the act of discharging someone because of age (especially to cause someone to retire from service on a pension)(noun.act)

  source: wordnet30
• The state of being superannuated, or too old for office or business; the state of being disqualified by old age; decrepitude.(noun)

  source: webster1913