urban center vs Feliz Lusitania

urban center and Feliz Lusitania both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Feliz Lusitania	Yes	No	No	No

urban center (noun)	Feliz Lusitania (noun)
a large and densely populated urban area; may include several independent administrative districts	port city in northern Brazil in the Amazon delta; main port and commercial center for the Amazon River basin