gulf

nouns

an arm of a sea or ocean partly enclosed by land; larger than a bay
gulf
is a part of
a division of an ocean or a large body of salt water partially enclosed by land
sea
is a type of (narrower)
the part of the earth's surface covered with water (such as a river or lake or ocean)
"they invaded our territorial waters"; "they were sitting by the water's edge"
body of water, water
an unbridgeable disparity (as from a failure of understanding)
"he felt a gulf between himself and his former friends"; "there is a vast disconnect between public opinion and federal policy"
disconnect, disconnection, gulf
a deep wide chasm
gulf
is a type of (narrower)
a deep opening in the earth's surface
chasm