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Treaties possess different names: international conventions, international agreements, covenants, final acts, charters, memorandums of understandings (MOUs), protocols, pacts, accords, and constitutions for international organizations.
Source: What are Treaties & International Agreements?, International Legal Research Tutorial. See also UN Treaty Reference Guide.
A Brief Treaty Lexicon in Mark Engsberg and Mary Beth Chappell, Globalex: UPDATE: An Introduction to Sources for Treaty Research.
Research Tip from Duke International Legal Research Tutorial
U.S. treaties and agreements are available from many different sources. To locate the treaty you need, remember:
Source: Duke, U.S. Treaties and Agreements: The Process, International Legal Research Tutorial, at http://law.duke.edu/ilrt/treaties_3.htm.