gulf vs Gulf of Saint Lawrence

gulf and Gulf of Saint Lawrence both are nouns.

Word	Noun	Adjective	Verb	Adverb
gulf	Yes	No	No	No
Gulf of Saint Lawrence	Yes	No	No	No

gulf (noun)	Gulf of Saint Lawrence (noun)
an unbridgeable disparity (as from a failure of understanding)	an arm of the northwest Atlantic Ocean off the southeastern coast of Canada
a deep wide chasm
an arm of a sea or ocean partly enclosed by land; larger than a bay