urban center vs Lancaster

urban center and Lancaster both are nouns.

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

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