What is the purpose of wood glue?

The purpose of wood glue is to bond pieces of wood together effectively. It creates a strong adhesive connection between the surfaces being joined, ensuring that the wood pieces maintain their structural integrity and stability during use. This is crucial in various woodworking projects, whether it's constructing furniture, cabinetry, or any other wooden structure, as a reliable bond enhances durability and functionality.

When wood glue is applied, it seeps into the fibers of the wood, creating a chemical bond as it dries, which is often stronger than the wood itself. This bonding capability allows for the joining of different types of wood and can accommodate various woodworking techniques, making it an essential tool in both amateur and professional woodworking.

In contrast, other options do not align with the primary function of wood glue. Coating the surface of wood pertains more to finishes or sealants, protecting wood from moisture relates to waterproofing agents, and enhancing color involves stains or dyes. These options reflect different aspects of wood finishing and protection but do not address the fundamental bonding role that wood glue serves.