RGAA is structured in the following way:
A theme is compound of several criteria, which in turn is compound of one or more tests.
Vocabulary used in Asqatasun
A test is the object from the accessibility business, child of a criteria, and describing from a technical point of view what to verify and how to do it.
Once a test is implemented in Asqatasun, we call it a rule. So a rule refers to the (Java) code that reflects the intent of the accessibility business.
Having two different words is important as it allows us to distinguish those two different objects.