Syrian Desert vs Republic of Iraq

Syrian Desert and Republic of Iraq both are nouns.

Word	Noun	Adjective	Verb	Adverb
Syrian Desert	Yes	No	No	No
Republic of Iraq	Yes	No	No	No

Syrian Desert (noun)	Republic of Iraq (noun)
a desert of northern Arabia occupying western Iraq, southern Syria, eastern Jordan, and northern Saudi Arabia	a republic in the Middle East in western Asia; the ancient civilization of Mesopotamia was in the area now known as Iraq