Bay of Campeche vs Gulf of Mexico

Bay of Campeche and Gulf of Mexico both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bay of Campeche	Yes	No	No	No
Gulf of Mexico	Yes	No	No	No

Bay of Campeche (noun)	Gulf of Mexico (noun)
a part of the Gulf of Mexico to the west of Yucatan	an arm of the Atlantic to the south of the United States and to the east of Mexico