Assertion: barrel | /r/CapableOf | bulge in the middle
Facets:
Source sentences:
text: As nouns the difference between tube and barrel is that tube is anything that is hollow and cylindrical in shape while barrel is (countable) a round vessel or cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends or heads sometimes applied to a similar cylindrical container made of metal, usually called a drum.