deluge vs spate

deluge and spate both are nouns.

Word	Noun	Adjective	Verb	Adverb
deluge	Yes	No	Yes	No
spate	Yes	No	No	No

As nouns, spate is a hypernym of deluge; that is, spate is a word with a broader meaning than deluge:

deluge (noun)	spate (noun)
a heavy rain	the occurrence of a water flow resulting from sudden rain or melting snow
the rising of a body of water and its overflowing onto normally dry land	a sudden forceful flow
an overwhelming number or amount	(often followed by `of') a large number or amount or extent

deluge (verb)	spate (verb)
fill or cover completely, usually with water
charge someone with too many tasks
fill quickly beyond capacity; as with a liquid