island vs Fijis

island and Fijis both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
Fijis	Yes	No	No	No

island (noun)	Fijis (noun)
a zone or area resembling an island	a group of more than 800 islands (100 inhabited) in the southwestern Pacific; larger islands (Viti Levu and Vanua Levu) are of volcanic origin surrounded by coral reefs; smaller islands are coral
a land mass (smaller than a continent) that is surrounded by water