A Diminished :: A C E♭

G
D
A
E
A
♭5
A
♭3
♭3
A
♭5
A
♭5
♭3
♭3
♭5
⬤ ⬤
A
⬤ ⬤
G Dominant 9th :: G B D F A

G
D
A
E
G
5
9
♭7
9
3
♭7
G
3
G
5
9
5
9
3
♭7
3
♭7
G
5
⬤ ⬤
G
5
9
⬤ ⬤