Ключевые слова: abstract, army, arrest, background, barb, barbed, barbwire, barrier, black, blue, border, camp, chain, closed, crime, criminal, danger, dangerous, defense, fence, freedom, guard, iron, jail, limit, metal, metallic, military, pattern, prevent, prison, private, protect, protection, razor, safety, secure, security, shape, sharp, sky, spiral, steel, stop, symbol, violence, wall, war, wire, zone,