noun (n)

• the state of being a married couple voluntarily joined for life (or until divorce)(noun.state)

  Synonym:
  marriage, spousal relationship, union, wedlock
  

  source: wordnet30
• the ceremony or sacrament of marriage(noun.act)

  source: wordnet30
• The union of man and woman as husband and wife; the nuptial state; marriage; wedlock.(noun)

  source: webster1913