Ключевые слова: abstract, army, arrest, barb, barbed, barbwire, barrier, bars, black, blue, border, boundary, chain, close, cross, danger, detail, deterrent, fence, forbidden, freedom, guard, horizontal, iron, isolated, jail, keep, metal, military, pain, post, prevent, prison, private, protection, razor, secure, security, sharp, sign, silhouette, single, sky, spike, steel, symbol, system, war, white, wire,