spit out vs splutter

spit out is not a noun while splutter is a noun.

Word	Noun	Adjective	Verb	Adverb
spit out	No	No	Yes	No
splutter	Yes	No	Yes	No

As verbs, spit out and splutter are synonyms defined as:

Other synonyms of spit out include sputter.

As verbs, splutter is a hyponym of spit out; that is, splutter is a word with a more specific, narrower meaning than spit out:

Other hyponyms of spit out include cough, ptyalise, ptyalize, spew, spit, spue, spit out, sputter.

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

spit out (verb)	splutter (verb)
spit up in an explosive manner	spit up in an explosive manner
discharge (phlegm or sputum) from the lungs and out of the mouth	utter with a spitting sound, as if in a rage
utter with anger or contempt