Atlantic Ocean vs British Isles

Atlantic Ocean and British Isles both are nouns.

Word	Noun	Adjective	Verb	Adverb
Atlantic Ocean	Yes	No	No	No
British Isles	Yes	No	No	No

Atlantic Ocean (noun)	British Isles (noun)
the 2nd largest ocean; separates North and South America on the west from Europe and Africa on the east	Great Britain and Ireland and adjacent islands in the north Atlantic