An oven is a cooking appliance that is used for baking, roasting, and broiling food. Ovens come in different types, including conventional, convection, and microwave ovens. Conventional ovens use heating elements located on the top and bottom of the oven to cook food, while convection ovens use a fan to circulate hot air evenly throughout the oven, resulting in faster and more even cooking. Microwave ovens use electromagnetic waves to heat food.

Refrigerators are household appliances that are used to keep food and other perishable items fresh by maintaining a cool temperature. They come in various sizes and designs, ranging from small compact models to large double-door models with advanced features like ice makers and water dispensers.