Ключевые слова: abstract, age, annual, background, board, circle, circular, concentric, conceptual, crack, cut, design, dirty, drawn, forest, growth, grunge, height, history, life, line, lumber, map, natural, nature, oak, old, organic, ornament, pattern, plant, plywood, ring, ripple, rough, scheme, shape, slice, space, split, striped, stump, surface, texture, textured, timber, topographic, topography, tree, trunk, wood, wooden, years,