waterspout vs rainfall

waterspout and rainfall both are nouns.

Word	Noun	Adjective	Verb	Adverb
waterspout	Yes	No	No	No
rainfall	Yes	No	No	No

As nouns, rainfall is a hypernym of waterspout; that is, rainfall is a word with a broader meaning than waterspout:

Other hypernyms of waterspout include rain.

waterspout (noun)	rainfall (noun)
a channel through which water is discharged (especially one used for drainage from the gutters of a roof)	water falling in drops from vapor condensed in the atmosphere
a tornado passing over water and picking up a column of water and mist
a heavy rain