Ключевые слова: army, arrest, background, barbed, barbed wire, barbwire, barrier, border, boundary, camp, close, criminal, danger, defend, defense, detail, detention, fence, forbidden, freedom, guard, hard, horizontal, iron, jail, limit, line, metal, military, object, pattern, prevent, prison, private, property, protection, razor, rust, safety, security, sharp, spike, steel, trap, violence, war, white, wire, zone,