deluge vs mountain

deluge and mountain both are nouns.

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

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

deluge (noun)	mountain (noun)
a heavy rain	a land mass that projects well above its surroundings; higher than a hill
the rising of a body of water and its overflowing onto normally dry land	(often followed by `of') a large number or amount or extent
an overwhelming number or amount

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