failure vs washout

failure and washout both are nouns.

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

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

Other hyponyms of failure include bankrupt, insolvent, flash in the pan, dud, flop, underdog.

failure (noun)	washout (noun)
an act that fails	someone who is unsuccessful
an unexpected omission	the erosive process of washing away soil or gravel by water (as from a roadway)
an event that does not accomplish its intended purpose	the channel or break produced by erosion of relatively soft soil by water
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