Ключевые слова: background, brain, brainstorm, bulb, collection, color, colour, concept, creativity, crinkle, education, efficiency, electricity, energy, flat, gear, genius, gyrus, head, icon, idea, imagination, innovation, inspiration, intelligence, invention, isolated, knowledge, lamp, light, lightbulb, line, mechanism, metaphor, mind, motivation, pictogram, power, science, set, simple, smart, solution, strategy, stroke, symbol, think, thought, white,