Cases of word usage

1) a stopper for closing a hole in a cask or barrel (bung)

2) a barrel for liquids (cask)

3) bits of worthless matter which sink to the bottom of liquid in a glass, bottle, barrel etc (dregs)

4) a circular band of wood or metal as put around a barrel etc; a large ring with paper stretched over it through which circus rides and animals jump (hoop)

5) a small barrel (keg)

6) an apparatus used for controlling the flow of liquid or gas from a pipe, barrel etc; a quick, light touch or blow (tap)