keg vs containerful

keg and containerful both are nouns.

Word	Noun	Adjective	Verb	Adverb
keg	Yes	No	No	No
containerful	Yes	No	No	No

As nouns, containerful is a hypernym of keg; that is, containerful is a word with a broader meaning than keg:

keg (noun)	containerful (noun)
small cask or barrel	the quantity that a container will hold
the quantity contained in a keg