I am currently studying for the California Bar exam. When I memorize my rule statements I often mix up "substantial" and "significant".
For example, sometimes I say "A concurrent conflict of interest exists if there is a substantial risk that the representation of one or more clients will be materially limited by the lawyer's responsibilities to another client, a former client, or a third person or by a personal interest of the lawyer". However, according to my notes I am supposed to say "significant".
That was just an example. What I want to know is if, in general, I should not treat these two words interchangeably. Do they truly have a different legal meaning? Are there some times when they do and other times when they don't?
By the way, I am not asking for advice for how to pass the bar exam per se. Nor am I asking if I will lose points if I use the terms interchangeably (though you can tell me if you happen to know). I was just providing context.