Actually we went over this in another thread but to clarify it. A Voice Teacher teaches you how to use your voice - the physicality of the voice and the diaphragm, the range of the instrument, etc. A Vocal Coach is more concerned with the way the song comes out of your mouth - helps you learn phrasing in songs, what keys are good for you, etc. In the U.S. if you are a professional singer, you can take the Vocal Coach fees off your taxes but not the Voice Teacher because they assume if you are a professional that you already know how to sing.