Wood grain refers to the pattern and texture found on the surface of wood, created by the arrangement of its fibers. This pattern varies significantly between different types of wood, such as oak, maple, or walnut, and can be influenced by factors like the tree's growth conditions and age. The grain can appear straight, wavy, or even spiral, contributing to the wood's aesthetic appeal. The grain is not only important for appearance but also affects the wood's strength and workability. For instance, hardwoods typically have a more complex grain than softwoods, making them suitable for furniture and cabinetry. Understanding wood grain is essential for woodworking and design.