Concentric cables are commonly used in a variety of applications such as telecommunications, power transmission and control systems. These cables consist of multiple layers made up of conductive materials, insulation, and shielding. There are a number of synonyms to the term "concentric cable" that are used interchangeably. These include circular coaxial cable, conductor cable, concentric neutral cable, and concentric lay cable. Each of these terms refers to the same type of cable and can be used to describe the same features such as the concentric layer design. The use of these synonyms can help to broaden the understanding of the different types of concentric cables that are available.