Proclamation
Part of speech: noun
Definition: a statement which is proclaimed; a formal public announcement
Example sentence: The Proclamation does not, indeed, mark out exactly the course I should myself prefer. But I am ready to take it just as it is written, and to stand by it with all my heart.
Declaration
Part of speech: noun
Definition: A written or oral indication of a fact, opinion, or belief.A list of items for various legal purposes, e.g. customs declaration.The act or process of declaring.The act, by the captain of a batting side, of declaring an innings closed.In common law, the formal document specifying plaintiff's cause of action, including the facts necessary to sustain a proper cause of action, and to advise the defendant of the grounds upon which he is being sued.
Example sentence: In the United States today, the Declaration of Independence hangs on schoolroom walls, but foreign policy follows Machiavelli.