The category that encompasses all land and water formations is the Earth's surface.

Here's why:

* Land formations: This includes mountains, valleys, plains, deserts, plateaus, and all the various land features we see.

* Water formations: This includes oceans, seas, lakes, rivers, streams, glaciers, and all the water bodies that exist on Earth.

Therefore, the Earth's surface encompasses all the land and water formations that make up our planet.