expectorate vs cough up

expectorate and cough up both are verbs.

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

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

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

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

expectorate (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
clear out the chest and lungs	give reluctantly