What are the different types of shoe molding used for finishing and enhancing the appearance of flooring installations?

Shoe molding, also known as quarter round, is a type of trim used to cover the gap between the baseboard and the flooring. It comes in various shapes and sizes, such as flat, rounded, or angled profiles. Shoe molding can be made of wood, PVC, or other materials, and is used to provide a finished look to flooring installations while also protecting the edges of the flooring.