capital of Georgia vs national capital

capital of Georgia and national capital both are nouns.

Word	Noun	Adjective	Verb	Adverb
capital of Georgia	Yes	No	No	No
national capital	Yes	No	No	No

capital of Georgia (noun)	national capital (noun)
the capital and largest city of Georgia on the Kura river	the capital city of a nation
state capital and largest city of Georgia; chief commercial center of the southeastern United States; was plundered and burned by Sherman's army during the American Civil War