capital of Estonia vs Tallinn

capital of Estonia and Tallinn both are nouns.

Word	Noun	Adjective	Verb	Adverb
capital of Estonia	Yes	No	No	No
Tallinn	Yes	No	No	No

As nouns, capital of Estonia and Tallinn are synonyms defined as:

capital of Estonia and Tallinn: a port city on the Gulf of Finland that is the capital and largest city of Estonia

Other synonyms of capital of Estonia include Tallin.

capital of Estonia (noun)	Tallinn (noun)
a port city on the Gulf of Finland that is the capital and largest city of Estonia	a port city on the Gulf of Finland that is the capital and largest city of Estonia