Lancaster vs urban center

Lancaster and urban center both are nouns.

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

Lancaster (noun)	urban center (noun)
the English royal house that reigned from 1399 to 1461; its emblem was a red rose	a large and densely populated urban area; may include several independent administrative districts
a city in northwestern England