Have you ever wondered how many chords are possible? Have you ever added up all the major chords, all the minor chords, all the diminished, augmented, 6th, m6th, 7th, maj7th, m7th, half-diminished, 9th, m9th, 11th, 13th, etc, etc.?
I challenge you to do it sometime -- I think you will be astounded.
If you would like to explore all the chords, take a look at All The Chords In The Whole Wide World.