heap vs torrent

heap and torrent both are nouns.

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

As nouns, torrent is a hyponym of heap; that is, torrent is a word with a more specific, narrower meaning than heap:

Other hyponyms of heap include deluge, flood, inundation, haymow.

heap (noun)	torrent (noun)
a car that is old and unreliable	a violently fast stream of water (or other liquid)
a collection of objects laid on top of each other	a heavy rain
(often followed by `of') a large number or amount or extent	an overwhelming number or amount