Cuban capital vs Havana

Cuban capital and Havana both are nouns.

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

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

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

Other synonyms of Cuban capital include capital of Cuba.

Cuban capital (noun)	Havana (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