Dado and groove
Dado joints are typically formed by three sections running crosswise across the grain of the wood. With a bigger surface area, the three sides provide a stronger bond with shear resistance and better shear resistance.
Tongue and groove
The tongue bulges from the board and slips into the groove cut of another board, resulting in a smooth surface. This joint is ideal for edge-to-edge connections because it enables the wood to contract and expand.
Rabbet joints have dado cuts or grooves carved into the wood end or edge, which accommodate a second wood piece. This way, the long edge is flush when the second piece is installed.
A half lap joint is made by removing roughly half the thickness of each piece of wood where they overlap. The wood pieces are then glued together to form a single flat piece. Half lap joints are a robust junction with a wide surface area for glue bonding.