Context: The terminology can also be confusing because a treaty may and usually is named something other than a treaty, such as a convention, protocol, or simply agreement. Conversely some legal documents such as the Treaty of Waitangi are internationally considered to be documents under domestic law.

Question: What is the Treaty of Waitangi internationally considered to be?
Answer: documents under domestic law

Question: What other terms might be used to refer to a treaty?
Answer: convention, protocol, or simply agreement

Question: What common terminological problem can sometimes lead to confusion surrounding a treaty?
Answer: named something other than a treaty,

Question: What's an example of a treaty that is considered internationally to be documents under domestic law?
Answer: the Treaty of Waitangi

Question: Convention, protocol, and agreement are examples of examples of different kinds of what that can create confusion about a treaty?
Answer: terminology