Rub al-Khali vs Ar Rimsal

Rub al-Khali and Ar Rimsal both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rub al-Khali	Yes	No	No	No
Ar Rimsal	Yes	No	No	No

As nouns, Rub al-Khali and Ar Rimsal are synonyms defined as:

Other synonyms of Rub al-Khali include Ad-Dahna Desert, Dahna, Great Sandy Desert.

Rub al-Khali (noun)	Ar Rimsal (noun)
a desert in southern Saudi Arabia	a desert in southern Saudi Arabia