Ключевые слова: art, circle, collection, concept, contour, customizable, design, earth, eco, ecology, editable, environment, flat, foliage, friendly, green, icon, illustration, isolated, item, leaf, line, linear, logo, logotype, nature, organic, outline, pictogram, planet, pollution, protection, recycle, reduce, refuse, reuse, rot, round, save, sign, simple, symbol, thin, trash, waste, web, zero,