Ключевые слова: abstract, accuracy, action, backgrounds, business, circle, closeup, communication, concepts, connect, connection, construction, cooperation, dirty, dust, energy, engine, engineer, engineering, equipment, gear, group, ideas, industrial, industry, iron, machine, machinery, metal, metallic, motion, objects, oil, parts, pinion, power, shape, stainless, steel, still, teamwork, technology, teeth, togetherness, tool, turning, unity, vehicle, wheel, work, working,