torrent vs downpour

torrent and downpour both are nouns.

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

As nouns, torrent and downpour are synonyms defined as:

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

torrent (noun)	downpour (noun)
a violently fast stream of water (or other liquid)	a heavy rain
a heavy rain
an overwhelming number or amount