The answer to 'junction box vs' is that a junction box and an electrical box are both enclosures used in electrical wiring, but they have some key differences. Junction boxes are specifically designed to house wire connections and splices, while electrical boxes can be used for a variety of electrical components like switches, outlets, or light fixtures.
Junction boxes are typically made of metal or plastic and have a cover that can be removed to access the internal wiring. They are required by electrical codes to be used anywhere wires are joined or spliced together. Electrical boxes, on the other hand, come in a wider range of sizes and materials to accommodate different types of devices. They may or may not have removable covers, depending on their purpose.