aircraft - a vehicle that can fly

ship - a vessel that carries passengers or freight

alteration, change, modification - an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"

action - something done (usually as opposed to something said); "there were stories of murders and other unnatural actions"

governing, government activity, governance, government - the act of governing; exercising authority; "regulations for the governing of state prisons"; "he had considerable experience of government"