Ключевые слова: abstract, alternative, art, blue, circle, clean, complex, concept, conceptual, conservation, contour, dark, drawing, eco, ecology, efficiency, electrochemical, energy, environment, general, gradient, graphic, green, grid, icon, idea, illustration, industry, innovation, investment, isolated, line, linear, lineart, metaphor, nature, navy, notion, outline, power, protection, renewable, round, startup, storage, sustainable, thin, web,