city vs Taiyuan

city and Taiyuan both are nouns.

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

city (noun)	Taiyuan (noun)
people living in a large densely populated municipality	an ancient city in northeastern China noted for coal mining and steel production
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter