Mediterranean Sea vs Mediterranean

Mediterranean Sea and Mediterranean both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mediterranean Sea	Yes	No	No	No
Mediterranean	Yes	Yes	No	No

As nouns, Mediterranean Sea and Mediterranean are synonyms defined as:

Mediterranean Sea and Mediterranean: the largest inland sea; between Europe and Africa and Asia

Mediterranean Sea (noun)	Mediterranean (noun)
the largest inland sea; between Europe and Africa and Asia	the largest inland sea; between Europe and Africa and Asia

Mediterranean Sea (adjective)	Mediterranean (adjective)
	of or relating to or characteristic of or located near the Mediterranean Sea