A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings.
A vuvuzela is a blowing horn used in soccer games in South Africa. They are also called lepatas or a stadium horn. To blow this horn, the lip and lung strength of the blower has to be strong to make a sound like a foghorn or an elephant.
