What do the instruments in each family have in common?

Instruments within each family share common characteristics related to their method of sound production. For example, string instruments produce sound through vibrating strings, while brass instruments generate sound via the vibration of the player's lips against a mouthpiece. Woodwinds rely on air being blown through reeds or across openings, and percussion instruments create sound through striking, shaking, or scraping. Additionally, instruments within the same family often share similar timbres and techniques for playing.