Non-conductors, also known as insulators, are materials that do not allow the flow of electricity through them. Some common synonyms for non-conductors include insulators, dielectrics, nonconducting materials, and non-metallic materials. Insulators are typically used in electrical systems to protect against electrical shocks and to prevent the loss of energy. Some examples of insulators include rubber, plastic, glass, ceramic, and wood. In addition to their use in electrical systems, insulators are also used in various other applications such as construction, automotive, and aerospace industries. Synonyms for non-conductors can be used interchangeably and help to describe the characteristics of these materials.