Ключевые слова: animal, art, banner, barrel, bin, bone, can, color, colorful, conservation, container, contour, eco, ecology, electric, energy, environment, fahrenheit, fuel, green, hot, icon, isolated, label, lamp, light, line, linear, nature, outline, package, panel, plastic, pop, popart, power, protection, recycle, recycling, set, shield, shopping, skeleton, symbol, temperature, trash,