Tundra and Desert are known to be two different types of biomes that can be found in various parts of the globe. Tundra is known to be a very cold region. It is not uncommon for Tundra to be covered in snow the whole year. The Desert is known to be a biome wherein the temperatures are normally high and hot.
It will not be common for the Desert not to have any water because this can be very hot. Take note that while their temperatures are different, they do have one similarity, and that is a decreased amount in rainfall for both of these regions. Some even say that Tundra is like a desert but with snow instead of sand.