national capital vs capital of Turkey

national capital and capital of Turkey both are nouns.

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

national capital (noun)	capital of Turkey (noun)
the capital city of a nation	the capital of Turkey; located in west-central Turkey; it was formerly known as Angora and is the home of Angora goats