For example, when Little Red Ridinghood is told by the wolf that his teeth are so big the better to eat her with, the wolf is giving a final cause of why his teeth are so big, but this is not {mu'i}. Perhaps {te pi'o}. The material cause of something is what it is made of, and the formal cause of something is what its form is. These might be {se ma'e} and {te ma'e}, but we probably wouldn't call them causes.
Those aren't causes. -epkat