What type of joint allows for movement between two pieces of wood?

The slip joint is specifically designed to accommodate movement between two pieces of wood. This type of joint allows for expansion and contraction due to changes in moisture content or temperature, which is essential in woodworking where wood can swell or shrink. Slip joints typically involve one piece of wood sliding into another, providing flexibility and preventing the joints from cracking or failing under stress.

In contrast, finger joints, mortise and tenon joints, and dado joints are primarily used for strength and structural integrity. While they create strong connections, they do not facilitate movement like a slip joint does. Finger joints interlock pieces together, mortise and tenon joints provide a robust connection for furniture and cabinetry, and dado joints serve to reinforce connections by fitting one piece of wood into a groove in another.