This method of joining wood was in use long before King Tut.
Nothing has proven better.
A mortise is a hole or slot cut into a piece of wood. A tenon is a shape cut on the end of an intersecting piece of wood that fits into the mortise. When joined, the two pieces are interlocked, rigid, and secured.
The mortise and tenon that joins the arms of our rocking chairs to the back legs is hell for stout. This is a term used on Texas farms to mean: strong, tough, reliable, and able to withstand overloading.
We use mortises and tenons throughout the line.
Sometimes the tenons pass through the mortised piece and are wedged like an ax handle.