What are the main differences between wind and brass instruments in terms of their construction, sound production, and playing techniques?

Wind instruments are typically made of wood or metal, while brass instruments are made of brass. Wind instruments produce sound by blowing air across a mouthpiece, while brass instruments produce sound by buzzing the lips into a mouthpiece. Playing techniques for wind instruments involve controlling the airflow and fingerings, while brass instruments require embouchure control and valve or slide manipulation.