noun (n)

• a communication intended to urge or persuade the recipients to take some action(noun.communication)

  source: wordnet30
• the act of exhorting; an earnest attempt at persuasion(noun.communication)

  Synonym:
  incitement
  

  source: wordnet30
• The act of practice of exhorting; the act of inciting to laudable deeds; incitement to that which is good or commendable.(noun)

  source: webster1913