deluge vs downpour

deluge and downpour both are nouns.

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

As nouns, deluge and downpour are synonyms defined as:

Other synonyms of deluge include cloudburst, pelter, soaker, torrent, waterspout.

deluge (noun)	downpour (noun)
a heavy rain	a heavy rain
the rising of a body of water and its overflowing onto normally dry land
an overwhelming number or amount

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