washout vs failure

washout and failure both are nouns.

Word	Noun	Adjective	Verb	Adverb
washout	Yes	No	No	No
failure	Yes	No	No	No

As nouns, failure is a hypernym of washout; that is, failure is a word with a broader meaning than washout:

Other hypernyms of washout include loser, nonstarter, unsuccessful person.

washout (noun)	failure (noun)
someone who is unsuccessful	an act that fails
the erosive process of washing away soil or gravel by water (as from a roadway)	an unexpected omission
the channel or break produced by erosion of relatively soft soil by water	an event that does not accomplish its intended purpose
	a person with a record of failing; someone who loses consistently
	lack of success
	loss of ability to function normally
	inability to discharge all your debts as they come due