capital of Antigua and Barbuda vs St. John's

capital of Antigua and Barbuda and St. John's both are nouns.

Word	Noun	Adjective	Verb	Adverb
capital of Antigua and Barbuda	Yes	No	No	No
St. John's	Yes	No	No	No

As nouns, capital of Antigua and Barbuda and St. John's are synonyms defined as:

capital of Antigua and Barbuda and St. John's: the capital and largest city of Antigua and Barbuda; located on the island of Antigua

Other synonyms of capital of Antigua and Barbuda include Saint John's.

capital of Antigua and Barbuda (noun)	St. John's (noun)
the capital and largest city of Antigua and Barbuda; located on the island of Antigua	a port and provincial capital of Newfoundland
	the capital and largest city of Antigua and Barbuda; located on the island of Antigua