Ключевые слова: abstract, antiterrorist, background, barb, barbed, barbwire, barrier, blue, border, boundary, camp, closed, concept, crime, criminal, danger, dangerous, dark, defense, fence, forbidden, freedom, frontier, iron, jail, metal, military, nobody, outdoors, pattern, prison, private, protection, razor, safety, security, sharp, sign, sky, spiral, steel, symbol, system, twilight, wall, war, warning, wire, wired, zone,