urban center vs Ephesus

urban center and Ephesus both are nouns.

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

urban center (noun)	Ephesus (noun)
a large and densely populated urban area; may include several independent administrative districts	the third ecumenical council in 431 which declared Mary as mother of God and condemned Pelagius
	an ancient Greek city on the western shore of Asia Minor in what is now Turkey; site of the Temple of Artemis; was a major trading center and played an important role in early Christianity