noun (n)

• the formal presentation of a stated proposition and the opposition to it (usually followed by a vote)(noun.communication)

  Synonym:
  debate, public debate
  

  source: wordnet30
• a contentious speech act; a dispute where there is strong disagreement(noun.communication)

  Synonym:
  arguing, argument, contention, contestation, controversy, disceptation, tilt
  

  source: wordnet30
• The act of disputing; a reasoning or argumentation in opposition to something, or on opposite sides; controversy in words; verbal contest respecting the truth of some fact, opinion, proposition, or argument.(noun)

  source: webster1913