Arch Support generally refers to the part of the insole of the shoe that raises right at the level of the arch to provide support to the midfoot. Arch Support also refers to individual insole cups with a molded shape that fit the arch and are placed inside the shoe to help relieve foot or heel pain.
About Slippers:
Slippers are a type of footwear that is soft and lightweight and can be slipped on and off easily. Slippers are made out of materials such as felt, terrycloth or soft leather, and may or may not be lined. Slippers have thin and flexible soles, with a shallow tread meant only to prevent the wearer from slipping on smooth floors. Most slippers are intended for indoor wear only.