washout vs unsuccessful person

washout and unsuccessful person both are nouns.

Word	Noun	Adjective	Verb	Adverb
washout	Yes	No	No	No
unsuccessful person	Yes	No	No	No

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

washout: someone who is unsuccessful
unsuccessful person: a person with a record of failing; someone who loses consistently

Other hypernyms of washout include failure, loser, nonstarter.

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