gravity wave vs gravitation wave

gravity wave and gravitation wave both are nouns.

Word	Noun	Adjective	Verb	Adverb
gravity wave	Yes	No	No	No
gravitation wave	Yes	No	No	No

As nouns, gravity wave and gravitation wave are synonyms defined as:

gravity wave and gravitation wave: (physics) a wave that is hypothesized to propagate gravity and to travel at the speed of light

gravity wave (noun)	gravitation wave (noun)
(physics) a wave that is hypothesized to propagate gravity and to travel at the speed of light	(physics) a wave that is hypothesized to propagate gravity and to travel at the speed of light