Sound qualities refer to the characteristics of a sound that distinguish it from other sounds. Timbres (7 letters) are the unique qualities of a sound that make it recognizable, such as the difference between a flute and a violin. Tones (5 letters) are the variations in pitch that can be heard in a sound, such as the difference between a high note and a low note. Together, timbres and tones create the overall sound quality of a sound.