 sales: the exchanging of goods or services for an agreed amount of money, or a single transaction

　　 marketing: the business activity of presenting products or services to potential customers in such a way as to make them eager to buy. Marketing includes such matters as the pricing and packaging of the product and the creation of demand by advertising and sales campaigns.

　　 management: the organizing and controlling of the affairs of a business or a particular sector of a business successfully.

　　 CEO: the abbreviated form for the chief executive officer.