spit out vs spew

spit out and spew both are verbs.

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

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

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

spit out (verb)	spew (verb)
spit up in an explosive manner	eject the contents of the stomach through the mouth
discharge (phlegm or sputum) from the lungs and out of the mouth	expel or eject (saliva or phlegm or sputum) from the mouth
utter with anger or contempt	eject or send out in large quantities, also metaphorical