Gronland vs Greenland

Gronland and Greenland both are nouns.

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

As nouns, Gronland and Greenland are synonyms defined as:

Gronland and Greenland: 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 Kalaallit Nunaat.

Gronland (noun)	Greenland (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