Sahara vs Sahara Desert

Sahara and Sahara Desert both are nouns.

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

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

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

Sahara (noun)	Sahara Desert (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