aquatic vs marine

aquatic and marine both are nouns.

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

aquatic (noun)	marine (noun)
a plant that lives in or on water	a soldier who serves both on shipboard and on land

aquatic (adjective)	marine (adjective)
operating or living or growing in water	relating to or characteristic of or occurring on or in the sea
relating to or consisting of or being in water	of or relating to the sea
	of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps)
	relating to or involving ships or shipping or navigation or seamen
	native to or inhabiting the sea