Nefud vs An Nafud

Nefud and An Nafud both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nefud	Yes	No	No	No
An Nafud	Yes	No	No	No

As nouns, Nefud and An Nafud are synonyms defined as:

Nefud and An Nafud: a desert in northern Saudi Arabia that is noted for its red sand and violent winds

Other synonyms of Nefud include An Nefud, Nafud.

Nefud (noun)	An Nafud (noun)
a desert in northern Saudi Arabia that is noted for its red sand and violent winds	a desert in northern Saudi Arabia that is noted for its red sand and violent winds