inundation vs mess

inundation and mess both are nouns.

Word	Noun	Adjective	Verb	Adverb
inundation	Yes	No	No	No
mess	Yes	No	Yes	No

As nouns, mess is a hypernym of inundation; that is, mess is a word with a broader meaning than inundation:

inundation (noun)	mess (noun)
the rising of a body of water and its overflowing onto normally dry land	a (large) military dining room where service personnel eat or relax
an overwhelming number or amount	a meal eaten in a mess hall by service personnel
	soft semiliquid food
	(often followed by `of') a large number or amount or extent
	a state of confusion and disorderliness
	informal terms for a difficult situation

inundation (verb)	mess (verb)
	make a mess of or create disorder in
	eat in a mess hall