island vs Kalimantan

island and Kalimantan both are nouns.

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

island (noun)	Kalimantan (noun)
a zone or area resembling an island	3rd largest island in the world; in the western Pacific to the north of Java; largely covered by dense jungle and rain forest; part of the Malay Archipelago
a land mass (smaller than a continent) that is surrounded by water	the part of Indonesia on the southern side of the island of Borneo