neritic zone vs ocean floor

neritic zone and ocean floor both are nouns.

Word	Noun	Adjective	Verb	Adverb
neritic zone	Yes	No	No	No
ocean floor	Yes	No	No	No

As nouns, ocean floor is a hypernym of neritic zone; that is, ocean floor 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
ocean floor: the bottom of a sea or ocean

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

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