Ключевые слова: architecture, area, barb, barbed, barricade, barrier, blue, closed, danger, dip, exterior, factory, fence, fencing, forged, galvanized, gate, gated, guard, high, industrial, industry, iron, lines, metal, military, nobody, palisade, plated, pointed, private, property, protect, protection, safety, section, secure, security, sharp, sign, sky, spike, spiked, spikes, steel, strong, system, welded, wire, zinc,