The principal deserts of the United States are:
Great Basin Desert
Chihuahuan Desert
Colorado Plateau Desert (includes the Painted Desert)
Mojave Desert (includes Death Valley)
Sonoran Desert (includes the Colorado Desert)
The two major deserts in Africa are the Sahara and the Kalahari.
The two famous deserts in China are the Gobi and the Taklamakan.
The Kalahari Desert and the Sahara Desert are two hot deserts in Africa.
Dasht-e Kavir and Dasht-e Lut are the two deserts in Iran.
The Kalahari Desert and the Namib Desert are the two other major African Deserts.
Colombia's diverse terrain includes two small deserts, La Tatacoa and La Guajira.
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.
Japan has no deserts.
There are no deserts in Delaware.
Haiti has no deserts.
There are no deserts in Rome.
Honduras has no deserts.