cough up vs expectorate

cough up and expectorate both are verbs.

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

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

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

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

cough up (verb)	expectorate (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	clear out the chest and lungs