Saint Maarten vs Saint Martin

Saint Maarten and Saint Martin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint Maarten	Yes	No	No	No
Saint Martin	Yes	No	No	No

As nouns, Saint Maarten and Saint Martin are synonyms defined as:

Saint Maarten and Saint Martin: an island in the western Leeward Islands; administered jointly by France and the Netherlands

Other synonyms of Saint Maarten include Sint Maarten, St. Maarten, St. Martin.

Saint Maarten (noun)	Saint Martin (noun)
an island in the western Leeward Islands; administered jointly by France and the Netherlands	an island in the western Leeward Islands; administered jointly by France and the Netherlands