circus vs Eternal City

circus and Eternal City both are nouns.

Word	Noun	Adjective	Verb	Adverb
circus	Yes	No	No	No
Eternal City	Yes	No	No	No

circus (noun)	Eternal City (noun)
a performance given by a traveling company of acrobats, clowns, and trained animals	capital and largest city of Italy; on the Tiber; seat of the Roman Catholic Church; formerly the capital of the Roman Republic and the Roman Empire
a frenetic disorganized (and often comic) disturbance suggestive of a large public entertainment
an arena consisting of an oval or circular area enclosed by tiers of seats and usually covered by a tent
(antiquity) an open-air stadium for chariot races and gladiatorial games
a travelling company of entertainers; including trained animals