Atlantic vs Atlantic Ocean

Atlantic and Atlantic Ocean both are nouns.

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

As nouns, Atlantic and Atlantic Ocean are synonyms defined as:

Atlantic and Atlantic Ocean: the 2nd largest ocean; separates North and South America on the west from Europe and Africa on the east

Atlantic (noun)	Atlantic Ocean (noun)
the 2nd largest ocean; separates North and South America on the west from Europe and Africa on the east	the 2nd largest ocean; separates North and South America on the west from Europe and Africa on the east

Atlantic (adjective)	Atlantic Ocean (adjective)
relating to or bordering the Atlantic Ocean