MORTICE and TENNON
Furniture maker for the most part. Anyone who builds post and beam buildings. Average home woodworker if skilled enough.
Furniture, wooden windows, panel doors. Makes a very strong joint where you have wood going in opposite directions such as the corner in a window.
I believe this refers to the size or width of the tenon. Making it almost the the size of the board it is in gives more surface area for glue.
another is the correct spelling
It is spelled springerle in German. In the German-speaking area of Switzerland it is also known as Änisbrötli.(Springerle are sweet biscuits embossed with various shapes and designs.)