treaty
[C] Countable
pl: treatiespast: nullpp: nulling: nullcomp: nullsup: null
This term carries a heavy weight of legal formality and international obligation. It suggests a binding commitment that is often subject to rigorous diplomatic negotiation and official ratification processes, making it far more solemn than a mere agreement or a pact.
Countable when referring to the specific legal documents or the individual agreements signed between nations.