Here's a breakdown:
* Conductors allow electricity to flow easily through them. They have free electrons that can move easily and carry the electric charge. Examples include metals like copper, silver, and gold.
* Insulators resist the flow of electricity. They have tightly bound electrons that cannot move freely. Examples include rubber, glass, plastic, and wood.
Important Note: No material is a perfect insulator. Even the best insulators can conduct electricity under certain conditions, such as very high voltage or extreme temperatures.