splutter vs utterance

splutter and utterance both are nouns.

Word	Noun	Adjective	Verb	Adverb
splutter	Yes	No	Yes	No
utterance	Yes	No	No	No

As nouns, utterance is a hypernym of splutter; that is, utterance is a word with a broader meaning than splutter:

Other hypernyms of splutter include vocalization.

splutter (noun)	utterance (noun)
an utterance (of words) with spitting sounds (as in rage)	the use of uttered sounds for auditory communication
the noise of something spattering or sputtering explosively

splutter (verb)	utterance (verb)
spit up in an explosive manner
utter with a spitting sound, as if in a rage