Ключевые слова: bucks, bundle, cartoon, chemical, collection, currency, dark, design, dollar, drip, drop, droplet, drops, economics, economy, energy, finance, financial, fluid, fossil, fuel, gas, gasoline, graphic, icon, icons, illustration, industry, isolated, liquid, market, melting, meter, money, oil, oily, petrol, petroleum, pollution, power, price, profit, profitability, puddle, set, sign, spill, stock, symbol,