national capital vs Turkish capital

national capital and Turkish capital both are nouns.

Word	Noun	Adjective	Verb	Adverb
national capital	Yes	No	No	No
Turkish capital	Yes	No	No	No

national capital (noun)	Turkish capital (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