handful vs containerful

handful and containerful both are nouns.

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

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

handful (noun)	containerful (noun)
the quantity that can be held in the hand	the quantity that a container will hold
a small number or amount