Valetta vs capital of Malta

Valetta and capital of Malta both are nouns.

Word	Noun	Adjective	Verb	Adverb
Valetta	Yes	No	No	No
capital of Malta	Yes	No	No	No

As nouns, Valetta and capital of Malta are synonyms defined as:

Valetta and capital of Malta: the capital of Malta; located on the northeastern coast of the island

Other synonyms of Valetta include Valletta.

Valetta (noun)	capital of Malta (noun)
the capital of Malta; located on the northeastern coast of the island	the capital of Malta; located on the northeastern coast of the island