airsick vs seasick

airsick and seasick both are adjectives.

Word	Noun	Adjective	Verb	Adverb
airsick	No	Yes	No	No
seasick	No	Yes	No	No

As adjectives, airsick and seasick are synonyms defined as:

Other synonyms of airsick include air sick, carsick.

airsick (adjective)	seasick (adjective)
experiencing motion sickness	experiencing motion sickness