Ключевые слова: affair, black and white, brain, bright, bulb, business, clip art, cognition, computer graphic, concept, copy space, design, design element, efficiency, electric, electricity, engineering, environmental conservation, icon, idea, illustration, infographic, innovation, inspiration, lamp, light, light bulb, line, logotype, mind, mobile app, modern, outline, power, recycling, reduction, renewable energy, shape, sign, simplicity, single object, smart, social issues, solution, strength, symbol, technology, thinking, web,