Ключевые слова: background, barb, barbed, barbwire, base, border, boundary, camp, close, closeup, crime, criminal, dangerous, defend, defense, entry, fence, forbid, forbidden, freedom, guard, hard, industrial, invade, iron, isolated, knot, limit, line, metal, military, obstacle, old, outdoor, pattern, prison, private, prohibit, protect, protection, razor, rust, rusty, safety, security, sharp, steel, trespassing, white, wire,