motion sickness: the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle
nausea: the state that precedes vomiting
polypodiaceae: ferns: a large family that in some classification systems has been subdivided into several families (including Aspleniaceae and Blechnaceae and Davalliaceae and Dennstaedtiaceae and Dryopteridaceae and Oleandraceae and Pteridaceae)