neritic zone vs Davy Jones

neritic zone and Davy Jones both are nouns.

Word	Noun	Adjective	Verb	Adverb
neritic zone	Yes	No	No	No
Davy Jones	Yes	No	No	No

As nouns, Davy Jones is a hypernym of neritic zone; that is, Davy Jones is a word with a broader meaning than neritic zone:

neritic zone: the ocean waters from the low tide mark to a depth of about 100 fathoms
Davy Jones: the bottom of a sea or ocean

Other hypernyms of neritic zone include Davy Jones's locker, ocean bottom, ocean floor, sea bottom, sea floor, seabed.

neritic zone (noun)	Davy Jones (noun)
the ocean waters from the low tide mark to a depth of about 100 fathoms	the bottom of a sea or ocean