expectorate vs drive out

expectorate and drive out both are verbs.

Word	Noun	Adjective	Verb	Adverb
expectorate	No	No	Yes	No
drive out	No	No	Yes	No

As verbs, expectorate and drive out are synonyms defined as:

Other synonyms of expectorate include clear out.

expectorate (verb)	drive out (verb)
discharge (phlegm or sputum) from the lungs and out of the mouth	clear out the chest and lungs
clear out the chest and lungs	force or drive out
	force to go away; used both with concrete and metaphoric meanings