Ключевые слова: advertisement, arrow, background, black, blackboard, board, business, buy, chalk, chalkboard, chart, commerce, concept, crisis, decline, design, diagram, direction, down, drawing, economic, economy, element, exchange, finance, financial, future, graph, graphic, growth, grunge, hand, icon, increase, investment, loss, market, object, opportunity, price, recession, revenue, sell, shape, sign, statistics, stock, symbol, trend, up,