Ключевые слова: area, barbed, barrier, border, close, concertina, construction, danger, defense, design, entanglement, factory, fence, ferry, gate, harbor, industrial, insurance, iron, maritime, mesh, mess, metal, muddle, object, obstacle, obstruction, passenger, prison, prohibition, protection, razor, restriction, scroll, sea, seaport, sector, security, separating, ship, site, spiral, steel, sunrise, surround, terrain, transport, wire, zone,