Havana vs Cuban capital

Havana and Cuban capital both are nouns.

Word	Noun	Adjective	Verb	Adverb
Havana	Yes	No	No	No
Cuban capital	Yes	No	No	No

As nouns, Havana and Cuban capital are synonyms defined as:

Havana and Cuban capital: the capital and largest city of Cuba; located in western Cuba; one of the oldest cities in the Americas

Other synonyms of Havana include capital of Cuba.

Havana (noun)	Cuban capital (noun)
the capital and largest city of Cuba; located in western Cuba; one of the oldest cities in the Americas	the capital and largest city of Cuba; located in western Cuba; one of the oldest cities in the Americas