mal de mer vs kinetosis

mal de mer and kinetosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
mal de mer	Yes	No	No	No
kinetosis	Yes	No	No	No

As nouns, kinetosis is a hypernym of mal de mer; that is, kinetosis is a word with a broader meaning than mal de mer:

mal de mer: motion sickness experienced while traveling on water
kinetosis: the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle

Other hypernyms of mal de mer include motion sickness.

mal de mer (noun)	kinetosis (noun)
motion sickness experienced while traveling on water	the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle