Ключевые слова: background, brain, brainstorm, bright, bulb, business, concept, creative, creativity, design, education, efficient, electric, electrical, electricity, element, energy, flat, fluorescent, glass, glow, graphic, icon, idea, illumination, illustration, imagination, innovation, inspiration, invention, isolated, lamp, light, light bulb, lightbulb, line, outline, power, set, sign, simple, solution, success, symbol, technology, think, web, white, yellow,