What do they sound like?
Comparing Brass and Woodwind
Brass: Made of bent metal tubes. Large bell at the end. Not many valves, or no valves. Metal mouthpiece buzzed into to create vibration.
Woodwind: Made of wood, plastic, or metal. Mostly straight and skinny, some with one bend. Many buttons or holes. Tone-hole or mouthpiece with reed blown to create vibration.