Chord Cousins (GuysGrids.com)

Part 1: Enharmonic Chords
G major/E	Emaj7(+5)
G major/E aka G6, 3rd inversion	Em7
Gm/E	Emaj7
Gm/E aka Gm6, 3rd inversion	Em7(5)
Gmaj7/E	Em9
G6/A	A9sus4
G6/C	Cmaj9
Gm6/C	C9
Gm7/B aka Gm7, 1st inversion	B6
Gm7/C	C9sus4
Gm7/E	Emaj9
Gdim (triad)/E	E7
Gm7(5)/E	E9
Gdim7/B aka Gdim7, 1st inversion	Bdim7
Gdim7/C	C7(9)
Gdim7/D aka Gdim7, 2nd inversion	C#dim7
Gdim7/E	E7(9)
Gdim7/F aka Gdim7, 3rd inversion	Edim7
View sample enharmonic chord page

Part 2: Implied Chords
Am/G	G7(9)(+5)
A major/G aka A7, 3rd inv G13(11) or Gmaj13(11)
Am/G aka Am7, 3rd inversion	G13sus4
D majorG	G7(9)(5)
Dm/G aka D dim triad, 2nd inv	G13(9)(11)
D maj/G	Gmaj9 or Gm(M9)
Dm/G	G9 or Gm9
E major/G aka E major, 1st inv	G7(9)(5)
E major/Fx	G13(9)
Fm/G	Gmaj9(11)
View sample implied chord page

Part 3: Chord Substitutes
G major/A	A9sus4
Gmaj7	Bm7
Gmaj7	Em7
Gmaj7	D6
Gmaj7	A13sus4
Gmaj9	Em11
Gmaj9	E9sus4
G7	Bm7(5)
G7	Bdim7
G7	D7
Gm/B	B6
Gm7	Cm7
Gm7	B7
Gm7	Bmaj7
Gm7	Em7(5)
Gm9	Bmaj13
Gm11	C9sus4
Gm7(5)	5maj7
View sample chord substitute page