gravitation wave vs gravity wave

gravitation wave and gravity wave both are nouns.

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

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

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

gravitation wave (noun)	gravity 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