capful vs containerful

capful and containerful both are nouns.

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

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

capful (noun)	containerful (noun)
the quantity that a cap will hold	the quantity that a container will hold