Difference between a Saxophone and a Clarinet

Saxophones and Clarinets have many things in common, but the sound of these instruments is different. But what is actually the difference between a Saxophone and a Clarinet? It's not the material, not the curviness and it has noting to do with the placements of the holes.

0:00 - Introduction
02:51 - The Flute / Open-Open Pipe
05:13 - Closed-Open Pipe
06:16 - Comparison
07:57 - Solution
10:54 - End

Resources and further information:
The conical bore in musical acoustics - https://www.researchgate.net/publicat...
UNSW Sydney Website:
Pipes and Harmonics - http://www.phys.unsw.edu.au/jw/pipes....
Saxophone acoustics: an introduction - http://www.phys.unsw.edu.au/jw/saxaco...
Clarinet acoustics: an introduction - http://www.phys.unsw.edu.au/jw/clarin...