Definitions of declaration:

• noun:   a statement that is emphatic and explicit (spoken or written)
• noun:   (law) unsworn statement that can be admitted in evidence in a legal transaction

  Example: "His declaration of innocence"

• noun:   a statement of taxable goods or of dutiable properties
• noun:   a formal expression by a meeting; agreed to by a vote
• noun:   (contract bridge) the highest bid becomes the contract setting the number of tricks that the bidder must make
• noun:   a formal public statement

  Example: "A declaration of independence"