Ключевые слова: abstract, architecture, art, background, black, boundary, built, cast, danger, decoration, design, freedom, industry, iron, isolated, line, metal, old, parallel, pattern, picket, prison, private, protect, protection, railing, rails, remote, retro, rod, row, safety, security, sharp, spike, spiked, steel, strength, striped, symbol, white, wrought,