The following examples show the structure and examples of the most common seventh chords:
Dominant Seventh: major triad, minor 7th
Major Seventh: major triad, major 7th
Minor Seventh: minor triad, minor 7th
Diminished Seventh: diminished triad, diminished 7th
Half Diminished Seventh: diminished triad, minor 7th
See C > Chord for related entries.