island vs Ellis Island

island and Ellis Island both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
Ellis Island	Yes	No	No	No

island (noun)	Ellis Island (noun)
a zone or area resembling an island	an island in New York Bay that was formerly the principal immigration station for the United States
a land mass (smaller than a continent) that is surrounded by water