dud vs washout

dud and washout both are nouns.

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

As nouns, dud and washout are synonyms defined as:

Other synonyms of dud include flop.

dud (noun)	washout (noun)
an event that fails badly or is totally ineffectual	someone who is unsuccessful
an explosion that fails to occur	the erosive process of washing away soil or gravel by water (as from a roadway)
someone who is unsuccessful	the channel or break produced by erosion of relatively soft soil by water

dud (adjective)	washout (adjective)
failing to detonate; especially not charged with an active explosive