A watertight vessel used for buoyancy
buoy, air cell, air cushion, lifesaver, pontoon, outrigger, cell, bobber, cork, quill, raft, diving platform, life preserver.
A vehicle used for display
exhibit, display, entry, car, chariot, platform.
waft, stay afloat, bob, hover; see drift, glide 2, swim.
"float." YourDictionary, n.d. Web. 24 May 2018. <http://thesaurus.yourdictionary.com/float>.
float. (n.d.). Retrieved May 24th, 2018, from http://thesaurus.yourdictionary.com/float
To move along with or be carried away by the action of water:
To pass quickly and lightly through the air: