Gronland vs Kalaallit Nunaat

Gronland and Kalaallit Nunaat both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gronland	Yes	No	No	No
Kalaallit Nunaat	Yes	No	No	No

As nouns, Gronland and Kalaallit Nunaat are synonyms defined as:

Gronland and Kalaallit Nunaat: the largest island in the world; lies between the North Atlantic and the Arctic Ocean; a self-governing province of Denmark

Other synonyms of Gronland include Greenland.

Gronland (noun)	Kalaallit Nunaat (noun)
the largest island in the world; lies between the North Atlantic and the Arctic Ocean; a self-governing province of Denmark	the largest island in the world; lies between the North Atlantic and the Arctic Ocean; a self-governing province of Denmark