Ключевые слова: area, barb, barbed, barricade, barrier, base, blue, border, boundary, camp, cattle, closed, cloud, concentration, country, crime, danger, demarcation, entrance, escape, fence, forbidden, freedom, frontier, gate, guard, iron, line, metal, military, pole, prison, private, protect, protection, protective, red, road, rust, safety, security, sharp, sky, spiral, street, system, war, warning, white, wire, wood,