noun (n)

• the state of being subordinate to something(noun.state)

  source: wordnet30
• the semantic relation of being subordinate or belonging to a lower rank or class(noun.linkdef)

  Synonym:
  hyponymy
  

  source: wordnet30
• the grammatical relation of a modifying word or phrase to its head(noun.linkdef)

  source: wordnet30
• the quality of obedient submissiveness(noun.attribute)

  Antonym:
  insubordination
  

  source: wordnet30
• the act of mastering or subordinating someone(noun.act)

  Synonym:
  mastery
  

  source: wordnet30
• The act of subordinating, placing in a lower order, or subjecting.(noun)

  source: webster1913