S: (n) escrow (a written agreement (or property or money) delivered to a third party or put in trust by one party to a contract to be returned after fulfillment of some condition)
S: (n) Articles of Confederation (a written agreement ratified in 1781 by the thirteen original states; it provided a legal symbol of their union by giving the central government no coercive power over the states or their citizens)
S: (v) tighten (become tight or tighter) "The rope tightened"
S: (v) change (undergo a change; become different in essence; losing one's or its original nature) "She changed completely as she grew older"; "The weather changed last night"