What are wires called that allow electricity to flow through them?

The correct designation for wires that enable electricity to flow through them is "conductors." Conductors are materials that permit the movement of electric charge, typically due to the presence of free electrons that can flow easily under the influence of an electric field. Metals such as copper and aluminum are common examples of conductive materials used in wires.

Circuits refer to a complete and closed path through which electric current can flow, but they do not describe the wires themselves. Connectors are components used to join electrical circuits together but do not define the nature of the wire's ability to conduct electricity. Insulators, on the other hand, are materials that resist the flow of electric current, thus preventing electricity from passing through them. These concepts are fundamental when discussing electrical systems and understanding how electricity operates.