cough out vs cough up

cough out and cough up both are verbs.

Word	Noun	Adjective	Verb	Adverb
cough out	No	No	Yes	No
cough up	No	No	Yes	No

As verbs, cough out and cough up are synonyms defined as:

cough out and cough up: discharge (phlegm or sputum) from the lungs and out of the mouth

Other synonyms of cough out include expectorate, spit out, spit up.

cough out (verb)	cough up (verb)
discharge (phlegm or sputum) from the lungs and out of the mouth	discharge (phlegm or sputum) from the lungs and out of the mouth
	give reluctantly