All of these definitions are from Black's Law Dictionary (11th ed. 2019)
Agencies:
agency (17c) 1. A relationship that arises when one person (a principal) manifests assent to another (an agent) that the agent will act on the principal's behalf, subject to the principal's control, and the agent manifests assent or otherwise consents to do so. • An agent's actions have legal consequences for the principal when the agent acts within the scope of the agent's actual authority or with apparent authority, or the principal later ratifies the agent's action.
Black's Law Dictionary (11th ed. 2019)
Legislation:
legislation (17c) 1. The process of making or enacting a positive law in written form, according to some type of formal procedure, by a branch of government constituted to perform this process. — Also termed lawmaking; statute-making. 2. The law so enacted; collectively, the formal utterances of the legislative organs of government. 3. The whole body of enacted laws.
Court Decision:
decision n. (16c) 1. A judicial or agency determination after consideration of the facts and the law; esp., a ruling, order, or judgment pronounced by a court when considering or disposing of a case.
Black's Law Dictionary (11th ed. 2019)
Treaty:
treaty (15c) 1. An agreement formally signed, ratified, or adhered to between two countries or sovereigns; an international agreement concluded between two or more states in written form and governed by international law.
