sickness vs kinetosis

sickness and kinetosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
sickness	Yes	No	No	No
kinetosis	Yes	No	No	No

As nouns, kinetosis is a hyponym of sickness; that is, kinetosis is a word with a more specific, narrower meaning than sickness:

sickness: the state that precedes vomiting
kinetosis: the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle

Other hyponyms of sickness include motion sickness, morning sickness, qualm, queasiness, squeamishness.

sickness (noun)	kinetosis (noun)
impairment of normal physiological function affecting part or all of an organism	the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle
the state that precedes vomiting
defectiveness or unsoundness