Ключевые слова: abstract, background, barrier, boundary, cage, chain, chained, chainlink, close, closeup, danger, design, detail, door, enclose, fence, freedom, gate, grass, green, grid, grunge, guard, industry, iron, jail, keep, key, link, lock, mesh, metal, metallic, net, old, padlock, pattern, popular, prevent, prison, protect, protection, rock, row, safety, security, steel, strong, texture, wall,