metropolis vs La Spezia

metropolis and La Spezia both are nouns.

Word	Noun	Adjective	Verb	Adverb
metropolis	Yes	No	No	No
La Spezia	Yes	No	No	No

metropolis (noun)	La Spezia (noun)
people living in a large densely populated municipality	a port city in Liguria on an arm of the Ligurian Sea; a major seaport and year-round resort
a large and densely populated urban area; may include several independent administrative districts