A baseboard is a length of wood or plastic that hides the joint between the floor and the bottom of a wall. While the main function is to hide the joint, baseboards also help prevent damage to walls. 

Baseboards are used in both commercial and residential buildings. Residential buildings typically use wooden baseboards that add a finished look and feel to homes. Durable plastic baseboards are typically the choice in commercial applications. Baseboards are installed by gluing or nailing to the wall. This helps preserve paint, wallboards, and sheetrock. Plastic baseboards are available in many colors to work with many styles and wooden baseboards can be painted to match any design aesthetic. Baseboards are very useful in rooms with carpeting. They help cover the carpet strip on the edges and reduce debris in crevices. Baseboards also help keep carpet taut.