I am learning about shell voicings for 7th chords. I understand that you you remove the 5th because it makes no difference in the quality of the chord. That leaves me with Cmin7 being C Eb Bb C half diminished being C Eb Bb
So because we removed the 5th, both chords have the same notes and therefore the same sound. In that case, what's the difference between the the two chords if we have the removed the 5th which is not essential?