Wood glue is a type of adhesive specifically designed for bonding wood surfaces together. It is commonly used in woodworking projects, furniture assembly, and repairs. Wood glue works by penetrating the wood fibers, creating a strong bond as it dries. There are various types of wood glue, including PVA (polyvinyl acetate), which is water-based and easy to clean up, and polyurethane glue, which is waterproof and suitable for outdoor use. Proper application and clamping are essential for achieving the best results with wood glue, ensuring a durable and lasting bond.