Ключевые слова: ability, action, activity, assistant, bills, business, buy, buyer, buying, cafe, card, cash, cashier, challenge, checkout, coffee, commercial, communication, consumer, consumerism, consumption, counter, creative, creativity, credit, customer, deals, expenses, finance, food, grocery, machine, pay, paying, payment, person, promotion, purchase, retail, sale, service, shop, shopper, shopping, spend, spending, supermarket, wireless,