An "accessory" refers to an item that is added to something else to enhance its functionality or appearance. Accessories can be found in various contexts, such as fashion, where items like jewelry, handbags, and scarves complement an outfit. They are often not essential but can significantly improve the overall look or utility of the main item. In other areas, such as technology, accessories include items like phone cases, headphones, and chargers that support the primary device. These items can improve user experience, protect the main product, or provide additional features, making them valuable additions to everyday items.