Ключевые слова: abstract, background, barb, barbed, barbwire, barrier, black, border, boundary, conflict, construction, danger, dangerous, design, fence, fighting, foreground, freedom, horizontal, iron, isolated, jail, metal, military, nature, outdoors, prison, prisoner, private, protection, rust, safety, security, shape, sharp, silhouette, sky, spikes, steel, sunset, symbol, system, texture, thorn, trespass, war, warfare, warning, white, wire,