Ключевые слова: alternative, art, bin, bulb, charge, color, colorful, contour, eco, ecology, electricity, energy, environment, fuel, gas, globe, green, hand, home, house, icon, illustration, isolated, lightning, line, linear, nature, no, organic, outline, package, panel, planet, plant, pop, popart, power, recycle, recycling, renewable, set, shopping, sign, sun, symbol, trash, world,