Greenland vs Gronland

Greenland and Gronland both are nouns.

Word	Noun	Adjective	Verb	Adverb
Greenland	Yes	No	No	No
Gronland	Yes	No	No	No

As nouns, Greenland and Gronland are synonyms defined as:

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

Other synonyms of Greenland include Kalaallit Nunaat.

Greenland (noun)	Gronland (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