When it comes to bedding, the term "top sheet" is commonly used to refer to the flat sheet that is placed on top of the fitted sheet and underneath any blankets or duvets. However, there are several synonyms that can also be used to describe this type of sheet. These include the terms "flat sheet," "topper sheet," "cover sheet," and "bed sheet." Each of these terms can be used interchangeably to refer to the same type of bedding accessory. Whether you prefer to use the traditional term "top sheet" or one of its synonyms, this essential bedding item is an important component of any comfortable and cozy sleeping space.