Ключевые слова: abstract, army, background, barb, barbed, barbwire, barrier, black, blue, border, boundary, camp, circle, concentration, concept, crime, danger, dangerous, design, fence, field, freedom, guard, iron, isolated, jail, metal, military, pattern, peace, prevent, prison, private, protection, razor, safety, secure, security, sharp, sign, silhouette, sky, steel, symbol, travel, wall, war, white, wire,