metropolis vs Seattle

metropolis and Seattle both are nouns.

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

metropolis (noun)	Seattle (noun)
people living in a large densely populated municipality	a major port of entry and the largest city in Washington; located in west central Washington on the protected waters of Puget Sound with the snow-capped peaks of the Cascade Range and Mount Rainier visible to the south and east; an aerospace and computer center; site of the University of Washington
a large and densely populated urban area; may include several independent administrative districts