Ключевые слова: abstract, alloy, aluminium, aluminum, backdrop, background, backgrounds, banner, board, border, construction, copyspace, design, dirty, durable, floor, frame, gray, grey, grunge, hard, heavy, illustration, industrial, industry, iron, ironworks, line, material, metal, metallic, modern, old, paper, pattern, plate, rough, sand, sheet, silver, space, stainless, steel, strong, surface, texture, textured, truck, wall, wallpaper,