What is the main difference between woodwind and brasswind musical instruments?

While both brass and woodwind instruments are played by blowing air into the mouthpiece, there are fundamental differences. Woodwinds, such as the Clarinet and Saxophone, use wooden reeds fitted to the mouth piece and it's the vibrations of this reed that create the sound. Brasswinds do not have a reed and the sound is created by the vibrations of the lips on the mouth piece.