- Major chord: The interval between the root note and the third note is a major third (4 half steps), and the interval between the third note and the fifth note is a minor third (3 half steps).
- Minor chord: The interval between the root note and the third note is a minor third (3 half steps), and the interval between the third note and the fifth note is a major third (4 half steps).
- Dominant seventh chord: The interval between the root note and the third note is a major third (4 half steps), the interval between the third note and the fifth note is a minor third (3 half steps), and the interval between the fifth note and the seventh note is a minor seventh (5 half steps).
- Minor seventh chord: The interval between the root note and the third note is a minor third (3 half steps), the interval between the third note and the fifth note is a major third (4 half steps), and the interval between the fifth note and the seventh note is a minor seventh (5 half steps).
- Suspended chord: A suspended chord is a chord that replaces the third with either the second or the fourth.