archipelago vs Tuvalu

archipelago and Tuvalu both are nouns.

Word	Noun	Adjective	Verb	Adverb
archipelago	Yes	No	No	No
Tuvalu	Yes	No	No	No

archipelago (noun)	Tuvalu (noun)
a group of many islands in a large body of water	a small island republic on the Tuvalu islands; formerly part of the British colony of Gilbert and Ellice Islands until it withdrew in 1975 and became independent of the United Kingdom in 1978
	a group of coral islands in Micronesia to the southwest of Hawaii