urban center vs Al-Mukalla

urban center and Al-Mukalla both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Al-Mukalla	Yes	No	No	No

urban center (noun)	Al-Mukalla (noun)
a large and densely populated urban area; may include several independent administrative districts	a port in southern Yemen on the Gulf of Aden to the east of Aden