Thebes vs metropolis

Thebes and metropolis both are nouns.

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

Thebes (noun)	metropolis (noun)
an ancient Greek city in Boeotia destroyed by Alexander the Great in 336 BC	people living in a large densely populated municipality
an ancient Egyptian city on the Nile River that flourished from the 22nd century BC to the 18th century BC; today the archeological remains include many splendid temples and tombs	a large and densely populated urban area; may include several independent administrative districts