Ur vs city

Ur and city both are nouns.

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

Ur (noun)	city (noun)
an ancient city of Sumer located on a former channel of the Euphrates River	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts
	an incorporated administrative district established by state charter