hissing vs fizzle

hissing and fizzle both are nouns.

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

As nouns, hissing and fizzle are synonyms defined as:

hissing and fizzle: a fricative sound (especially as an expression of disapproval)

Other synonyms of hissing include hiss, hushing, sibilation.

hissing (noun)	fizzle (noun)
a fricative sound (especially as an expression of disapproval)	a complete failure
	a fricative sound (especially as an expression of disapproval)

hissing (verb)	fizzle (verb)
	end weakly