barrel vs bung

barrel and bung both are nouns.

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

barrel (noun)	bung (noun)
a cylindrical container that holds liquids	a plug used to close a hole in a barrel or flask
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)	bung (verb)
put in barrels	close with a cork or stopper
	give a tip or gratuity to in return for a service, beyond the compensation agreed on