Our tables and chairs are held together by wood locking into wood. A tenon is cut to fit its mortise exactly, then glued and pegged.
Unlike screws driven into end grain, a well-cut joint doesn't loosen as the furniture is used. It gets tighter as the glue cures and the wood settles.
It's slower and it takes skill, which is why most mass-produced furniture doesn't do it. We think it's the difference between furniture that lasts years and furniture that lasts generations.
Joinery in teak, walnut and mango