Deserts provide a great ecosystem.
The Great Victoria Desert and the Great Sandy Desert are the largest deserts in Australia.
The two great deserts of China are the Gobi and the Taklamakan.
Two deserts in the Great Basin are the Black Rock Desert and Great Salt Lake Desert.
For a map of the locations of Australian deserts click on this link.
Parts of the Mojave, Sonoran and Great Basin Deserts enter California.
Polar Deserts - Antarctica Cold Winter Deserts - Gobi, Great Basin, Patagonian Cool Coastal Deserts - Atacama, Namib
The deserts are classified as hot subtropical deserts (Mojave, Sonoran and Chihuahuan) and cold winter deserts (Great Basin and Colorado Plateau).
The three largest deserts in Australia are"1.) Great Victorian Desert2.) Great Sandy Desert3.) The Gibson Desert
The two main deserts I assume you are talking about is hot and cold deserts. The difference between them is temperature (warm moderate summers for hot deserts, low rainfall.) Cold deserts may have snowfall and much lower temperatures in the winter. Summers in cold deserts may get quite hot, however.
The United States has both:Hot Deserts - Mojave, Sonoran, ChihuahuanCold Deserts - Great Basin, Colorado Plateau Desert
All deserts are arid regions. That's why they are called deserts.