No, Mercury the planet and Mercury the element are not the same thing. They are completely different entities.

* Mercury (planet) is the smallest planet in our solar system and the closest to the sun. It is a rocky, cratered world with a very thin atmosphere.

* Mercury (element) is a heavy, silvery-white liquid metal. It is used in thermometers, barometers, and other scientific instruments.

While both are named after the Roman god Mercury, they have no relation to each other in terms of composition or properties.