Ключевые слова: abstract, background, barb, barbed, barbwire, barrier, black, border, boundary, camp, closed, cloud, concept, crime, danger, dangerous, defense, fence, forbidden, frame, freedom, guard, iron, jail, line, metal, military, old, outdoor, pattern, prison, private, protection, rusty, safety, secure, security, sharp, sign, silhouette, sky, steel, symbol, wall, war, white, wire,