Lancaster vs city

Lancaster and city both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lancaster	Yes	No	No	No
city	Yes	No	No	No

Lancaster (noun)	city (noun)
the English royal house that reigned from 1399 to 1461; its emblem was a red rose	people living in a large densely populated municipality
a city in northwestern England	a large and densely populated urban area; may include several independent administrative districts
	an incorporated administrative district established by state charter