The term 'MORTISE Mate' is a combination of two words, 'MORTISE' and 'TENON'. MORTISE is a type of joint used in carpentry and joinery, where a hole is cut into one piece of wood and a corresponding tongue is cut into another piece of wood. The TENON is the tongue that fits into the MORTISE. Together, the MORTISE and TENON form a strong joint that is used to connect two pieces of wood. The MORTISE Mate is a tool used to create the MORTISE and TENON joint quickly and accurately.