Ключевые слова: area, army, barb, barbed wire, barrage, barrier, border, boundary, captivity, cordon, crime, danger, defense, delimit, detention, deterrent, element, enclosure, fence, forbidden, forbidding, guard, hindrance, industrial, industry, insulation, iron, jail, limit, metal, military, outdoors, prison, privacy, private, property, protection, risk, row, safety, seclusion, secret, security, separation, sharp, spike, steel, system, thorn, trespass, warning, wire, zone,