Constantine vs metropolis

Constantine and metropolis both are nouns.

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

Constantine (noun)	metropolis (noun)
a walled city in northeastern Algeria to the east of Algiers; was destroyed in warfare in the 4th century and rebuilt by Constantine I	people living in a large densely populated municipality
Emperor of Rome who stopped the persecution of Christians and in 324 made Christianity the official religion of the Roman Empire; in 330 he moved his capital from Rome to Byzantium and renamed it Constantinople (280-337)	a large and densely populated urban area; may include several independent administrative districts