Pictogramme of hierarchy - people on a ladder. A hierarchy (from the Greek hierarchia, rule of a high priest, from hierarkhes, leader of sacred rites) is an arrangement of items (objects, names, values, categories, etc.) in which the items are represented as being above, below, or at the same level as one another.
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Costco (COST) says it will start accepting Visa (V) rather than American Express (AXP) at its U.S. stores on April 1, 2016. Currently, the wholesale club retailer has accepted only debit cards and Amex for purchases in its stores or at its gas stations, although it also accepts Visa and MasterCard for online purchases.