An ice chest is a portable cooler that serves to keep things cold, particularly beverages, snacks, and perishables. Some words that can be used interchangeably with "ice chest" include "cooler," "icebox," "chilly bin," "esky," "fridge," "refrigerator," "freezer," and "cold box." The term "cooler" tends to be used more frequently nowadays to refer to this type of item, especially in North America. In Australia and New Zealand, the word "esky" is commonly used, while in the United Kingdom and other parts of the world, it is referred to as a "chilly bin." Regardless, these terms all pertain to a receptacle for keeping things cold, which is essential for outdoor activities and trips.