I am a homonym that can be spelled two ways, and I have more than one meaning. Spelled one way, I can refer to a small donkey that is often used as a pack animal. One person actually called this member of the horse family "an animal all-terrain vehicle" because it can travel over rugged, mountainous terrain. In Shrek, a silly, slightly annoying donkey is not a practical pack animal, but that character is helpful in other ways. Spelled another way, I can refer to a hole in the ground made by a small animal such as a rabbit. As a .....