teacup vs containerful

teacup and containerful both are nouns.

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

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

teacup (noun)	containerful (noun)
a cup from which tea is drunk	the quantity that a container will hold
as much as a teacup will hold