cask vs barrel

cask and barrel both are nouns.

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

As nouns, cask and barrel are synonyms defined as:

cask (noun)	barrel (noun)
a cylindrical container that holds liquids	a cylindrical container that holds liquids
the quantity a cask will hold	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

cask (verb)	barrel (verb)
	put in barrels