What is the difference between a major chord and a minor chord?

A major chord is a chord that has a root note, a major third, and a perfect fifth. For example, a C major chord consists of the notes C, E, and G. Major chords are often described as sounding happy or bright.

On the other hand, a minor chord is a chord that has a root note, a minor third, and a perfect fifth. For example, a C minor chord consists of the notes C, E-flat, and G. Minor chords are often described as sounding sad or dark.