What is the difference between major and minor chords in music theory?

Major chords are typically perceived as bright, happy, and stable, while minor chords are often seen as sad, dark, or melancholic. The difference lies in the intervals between the notes that make up the chord, specifically the third interval. In major chords, the third interval is a major third, while in minor chords, the third interval is a minor third. This difference in intervals gives major and minor chords their distinct emotional qualities.