Darshan
Sekolah Menengah Kebangsaan Jalan Damai answered Saturday, 8th August 2015 Accepted Answer
auxiliary:An auxiliary verb is a verb that adds functional or grammatical meaning to the clause in which it appears—for example, to express tense, aspect, modality, voice, emphasis, etc. Auxiliary verbs usually accompany a main verb. The main verb provides the main semantic content of the clause.
buoyancy:the ability or tendency to float in water or air or some other fluid.