tub vs containerful

tub and containerful both are nouns.

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

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

tub (noun)	containerful (noun)
a large open vessel for holding or storing liquids	the quantity that a container will hold
a relatively large open container that you fill with water and use to wash the body
the amount that a tub will hold