Bucharesti vs capital of Romania

Bucharesti and capital of Romania both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bucharesti	Yes	No	No	No
capital of Romania	Yes	No	No	No

As nouns, Bucharesti and capital of Romania are synonyms defined as:

Bucharesti and capital of Romania: national capital and largest city of Romania in southeastern Romania

Other synonyms of Bucharesti include Bucharest, Bucuresti.

Bucharesti (noun)	capital of Romania (noun)
national capital and largest city of Romania in southeastern Romania	national capital and largest city of Romania in southeastern Romania