capital of Norway vs Christiania

capital of Norway and Christiania both are nouns.

Word	Noun	Adjective	Verb	Adverb
capital of Norway	Yes	No	No	No
Christiania	Yes	No	No	No

As nouns, capital of Norway and Christiania are synonyms defined as:

capital of Norway and Christiania: the capital and largest city of Norway; the country's main port; located at the head of a fjord on Norway's southern coast

Other synonyms of capital of Norway include Oslo.

capital of Norway (noun)	Christiania (noun)
the capital and largest city of Norway; the country's main port; located at the head of a fjord on Norway's southern coast	the capital and largest city of Norway; the country's main port; located at the head of a fjord on Norway's southern coast