Ключевые слова: abstract, background, barb, barbed, barbwire, barrier, bird, black, blue, border, boundary, camp, chain, cloud, concept, crime, danger, fence, forbidden, freedom, guard, horizontal, iron, isolated, jail, metal, military, nature, old, pattern, prison, prisoner, private, protection, razor, refugee, safety, security, sharp, sign, silhouette, sky, steel, sunset, symbol, wall, war, warning, white, wire,