marine vs oceanic

marine is a noun but oceanic is not a noun.

Word	Noun	Adjective	Verb	Adverb
marine	Yes	Yes	No	No
oceanic	No	Yes	No	No

marine (noun)	oceanic (noun)
a soldier who serves both on shipboard and on land

marine (adjective)	oceanic (adjective)
relating to or characteristic of or occurring on or in the sea	relating to or occurring or living in or frequenting the open ocean
of or relating to the sea	constituting or living in the open sea
of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps)	resembling the ocean in apparent limitlessness in extent or degree
relating to or involving ships or shipping or navigation or seamen
native to or inhabiting the sea