Ключевые слова: background, barrier, black, black white, body, business, button, close, closeup, coil, dark, detail, device, equipment, fastener, gear, gearing, iron, machine, mechanism, metal, nut and bolt, obstruction, old, part, pattern, restraint, screw, shirt button, silk fabric, steel, stone, structure, support, technology, texture, tool, tools, tooth, wheel, wood, work, wrench,