Mogadiscio vs national capital

Mogadiscio and national capital both are nouns.

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

Mogadiscio (noun)	national capital (noun)
the capital and largest city of Somalia; a port on the Indian Ocean	the capital city of a nation