sea floor vs ocean floor

sea floor and ocean floor both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea floor	Yes	No	No	No
ocean floor	Yes	No	No	No

As nouns, sea floor and ocean floor are synonyms defined as:

Other synonyms of sea floor include Davy Jones's locker, Davy Jones, ocean bottom, sea bottom, seabed.

sea floor (noun)	ocean floor (noun)
the bottom of a sea or ocean	the bottom of a sea or ocean