national capital vs Lhasa

national capital and Lhasa both are nouns.

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

national capital (noun)	Lhasa (noun)
the capital city of a nation	a breed of terrier having a long heavy coat raised in Tibet as watchdogs
	the sacred city of Lamaism; known as the Forbidden City for its former inaccessibility and hostility to strangers