inundate vs deluge

inundate is not a noun while deluge is a noun.

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

As verbs, inundate and deluge are synonyms defined as:

Other synonyms of inundate include submerge.

As verbs, inundate and deluge are synonyms defined as:

Other synonyms of inundate include flood, swamp.

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

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