I am a homonym that can be spelled two ways and have at least two meanings. In one case, I am a type of boat used to transport people, cars, or cargo over a body of water. You might not like to ride on me if you get seasick. On the other hand, I am a small, imaginary creature who has unusual powers and wings. Sometimes, I spread sparkly dust around just for fun. If you've ever watched the movie Peter Pan, you would recognize me as .....