Ключевые слова: arrest, background, barb, barbed, barrier, blue, border, boundary, cage, camp, closed, concept, concrete, crime, danger, dark, design, enclose, fence, forbidden, freedom, graphic, guard, imprisonment, industry, inside, iron, jail, lock, mesh, metal, military, nobody, obstacle, prison, protection, razor, security, separation, sharp, silhouette, sky, spiked, spiky, steel, wall,