The answer to 'difference between electrical wiring' is that there are several types of electrical wiring used in homes, each with its own features, benefits, and use cases. The most common types are Romex, BX cable, and conduit wiring.
Romex is a type of non-metallic sheathed cable that is the most popular and cost-effective option for residential wiring. It is easy to install and provides good protection for the wires. BX cable, also known as armored cable, has a flexible metal sheath that provides extra physical protection. Conduit wiring uses rigid or flexible metal or plastic tubing to enclose the wires, offering the highest level of protection but also requiring more labor to install.