WOOD FEATURE is a term that refers to the physical characteristics of wood, such as its GRAIN, knots, and other features. GRAIN is the pattern of fibers in wood, which can be seen when the wood is cut or split. Knots are protrusions in wood caused by branches or limbs that were once part of the tree. WESTSIDESTORY is a musical written by Leonard Bernstein and Stephen Sondheim, which features a song about wood called 'America'.