metropolis vs Tangshan

metropolis and Tangshan both are nouns.

Word	Noun	Adjective	Verb	Adverb
metropolis	Yes	No	No	No
Tangshan	Yes	No	No	No

metropolis (noun)	Tangshan (noun)
people living in a large densely populated municipality	an industrial city of northeastern China in Hebei province
a large and densely populated urban area; may include several independent administrative districts