Ключевые слова: abstract, background, barb, barbed, barrier, black, blue, border, boundary, camp, closed, concept, crime, danger, dangerous, defense, detail, fence, forbidden, frame, freedom, guard, horizontal, iron, line, metal, military, pattern, prison, private, protection, razor, refugee, rusty, safety, security, sharp, sign, silhouette, sky, steel, sunrise, sunset, symbol, wall, war, warning, white, wire,