sputter vs sputtering

sputter and sputtering both are nouns.

Word	Noun	Adjective	Verb	Adverb
sputter	Yes	No	Yes	No
sputtering	Yes	No	No	No

As nouns, sputter and sputtering are synonyms defined as:

sputter and sputtering: the noise of something spattering or sputtering explosively

Other synonyms of sputter include spatter, spattering, splatter, splattering, splutter.

sputter (noun)	sputtering (noun)
an utterance (of words) with spitting sounds (as in rage)	the noise of something spattering or sputtering explosively
the noise of something spattering or sputtering explosively

sputter (verb)	sputtering (verb)
spit up in an explosive manner
cause to undergo a process in which atoms are removed
utter with a spitting sound, as if in a rage
climb awkwardly, as if by scrambling
make an explosive sound