Ключевые слова: abstract, barb, barbed, barbwire, barrier, beautiful, border, boundary, cage, chain, closed, construction, danger, defense, design, edge, fence, forbid, freedom, graphic, iron, law, mesh, metal, net, object, prison, protection, rope, safety, security, separation, sharp, silhouette, sky, steel, thorns, tile, white, wire, wired,