Republic of Iraq vs Syrian Desert

Republic of Iraq and Syrian Desert both are nouns.

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

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