A more thorough explanation:

Ex figura verborum is a Latin term used in law that means "by the form of the words used." It refers to the fact that the wording of a legal document is important and cannot be changed simply by calling it something else. For example, if a document is defective, it cannot be fixed by renaming it.

One example of ex figura verborum is a contract that is missing a signature. Even if the parties involved intended to sign the contract, the lack of a signature makes it invalid. Another example is a will that is not properly witnessed. Even if the document clearly states the wishes of the deceased, it cannot be considered a valid will without proper witnesses.

These examples illustrate the importance of following legal formalities when creating documents. The wording and format of legal documents must be precise and accurate in order to be legally binding. Even small errors or omissions can render a document invalid.