Ключевые слова: background, barb, barbed, barbwire, base, boundary, camp, clipart, close, closeup, defend, defense, detail, entry, fence, forbid, forbidden, guard, hard, industrial, invade, iron, isolated, knot, limit, line, metal, military, no, obstacle, old, pattern, prison, private, prohibit, property, protect, protection, razor, rust, rusty, security, sharp, steel, trespassing, up, white, wire,