failure vs fizzle

failure and fizzle both are nouns.

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

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

failure (noun)	fizzle (noun)
an act that fails	a complete failure
an unexpected omission	a fricative sound (especially as an expression of disapproval)
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

failure (verb)	fizzle (verb)
	end weakly