barrel vs wine cask

barrel and wine cask both are nouns.

Word	Noun	Adjective	Verb	Adverb
barrel	Yes	No	Yes	No
wine cask	Yes	No	No	No

As nouns, wine cask is a hyponym of barrel; that is, wine cask is a word with a more specific, narrower meaning than barrel:

Other hyponyms of barrel include beer barrel, beer keg, butt, hogshead, keg, pickle barrel, shook, tun, wine barrel.

barrel (noun)	wine cask (noun)
a cylindrical container that holds liquids	a barrel that holds wine
a tube through which a bullet travels when a gun is fired
any of various units of capacity
the quantity that a barrel (of any size) will hold
a bulging cylindrical shape; hollow with flat ends

barrel (verb)	wine cask (verb)
put in barrels