Cape Sable Island vs Cape Sable

Cape Sable Island and Cape Sable both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cape Sable Island	Yes	No	No	No
Cape Sable	Yes	No	No	No

As nouns, Cape Sable Island and Cape Sable are synonyms defined as:

Cape Sable Island and Cape Sable: a promontory on the far southern part of Nova Scotia

Cape Sable Island (noun)	Cape Sable (noun)
a promontory on the far southern part of Nova Scotia	a promontory on the far southern part of Nova Scotia
	a cape at the southwest tip of Florida; the southernmost part of the United States mainland