Sparta vs urban center

Sparta and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sparta	Yes	No	No	No
urban center	Yes	No	No	No

Sparta (noun)	urban center (noun)
an ancient Greek city famous for military prowess; the dominant city of the Peloponnesus prior to the 4th century BC	a large and densely populated urban area; may include several independent administrative districts