metropolis vs Reading

metropolis and Reading both are nouns.

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

metropolis (noun)	Reading (noun)
people living in a large densely populated municipality	a city on the River Thames in Berkshire in southern England
a large and densely populated urban area; may include several independent administrative districts