Sahara Desert vs Sahara

Sahara Desert and Sahara both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sahara Desert	Yes	No	No	No
Sahara	Yes	No	No	No

As nouns, Sahara Desert and Sahara are synonyms defined as:

Sahara Desert and Sahara: the world's largest desert (3,500,000 square miles) in northern Africa

Sahara Desert (noun)	Sahara (noun)
the world's largest desert (3,500,000 square miles) in northern Africa	the world's largest desert (3,500,000 square miles) in northern Africa