spit out vs let out

spit out and let out both are verbs.

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

As verbs, let out is a hypernym of spit out; that is, let out is a word with a broader meaning than spit out:

Other hypernyms of spit out include emit, let loose, utter.

spit out (verb)	let out (verb)
spit up in an explosive manner	make (clothes) larger
discharge (phlegm or sputum) from the lungs and out of the mouth	make known to the public information that was previously known only to a few people or that was meant to be kept a secret
utter with anger or contempt	express audibly; utter sounds (not necessarily words)
	bring out of a specific state