washout vs loser

washout and loser both are nouns.

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

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

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

washout (noun)	loser (noun)
someone who is unsuccessful	a gambler who loses a bet
the erosive process of washing away soil or gravel by water (as from a roadway)	a contestant who loses the contest
the channel or break produced by erosion of relatively soft soil by water	a person with a record of failing; someone who loses consistently