Ключевые слова: abstract, army, background, barb, barbwire, barrier, black, blur, border, boundary, camp, chain, closeup, cloud, concept, crime, danger, dangerous, defense, detail, fence, forbidden, freedom, gray, guard, iron, isolated, jail, macro, metal, military, old, oman, pattern, prison, protect, protection, razor, rust, safety, security, shape, sharp, steel, symbol, texture, war, white, wire, wood,