Ключевые слова: abstract, alloy, aluminium, aluminum, antique, background, burnish, cross, door, gray, green, grunge, grungy, hard, heavy, industrial, industry, iron, layout, line, material, metal, metallic, nail, oil, old, pin, plate, rivets, rough, rust, rusted, rusty, scrape, screw, sheet, silver, space, spike, square, stainless, steel, surface, tack, tank, texture, tough, wall, water,