watering can vs containerful

watering can and containerful both are nouns.

Word	Noun	Adjective	Verb	Adverb
watering can	Yes	No	No	No
containerful	Yes	No	No	No

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

watering can (noun)	containerful (noun)
a container with a handle and a spout with a perforated nozzle; used to sprinkle water over plants	the quantity that a container will hold
the quantity that a watering can will hold.