Synonyms for Declaration (same or very similar meaning)
WordNet sense 1 ((contract bridge) the highest bid becomes the contract setting the number of tricks that the bidder must make):
contract, contract
WordNet sense 2 (a formal public statement):
announcement, annunciation, proclamation
WordNet sense 3 (a formal expression by a meeting; agreed to by a vote):
resolution, resolve, resolve
From the ODE community, based on WordNet
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