Ключевые слова: architecture, art, bolt, building, business, concept, contour, eco, ecology, engineering, environment, estate, flash, friendly, glass, graphic, green, home, house, icon, illustration, industrial, industry, infographic, isolated, leaf, lens, line, linear, lineart, magnifying, outline, package, paper, plant, pollution, power, real, recycle, recycling, search, shopping, sign, smoke, symbol,