An upright refrigerator is commonly called a "refrigerator" or a "fridge." It is a household appliance used to store and preserve food at a cool temperature, typically between 0°C to 5°C (32°F to 41°F) to slow down the spoilage of perishable items. The term "upright" refers to its vertical design, with the door opening from the front and shelves or compartments inside for organizing food items.