prolong vs draw out

prolong and draw out both are verbs.

Word	Noun	Adjective	Verb	Adverb
prolong	No	No	Yes	No
draw out	No	No	Yes	No

As verbs, prolong and draw out are synonyms defined as:

Other synonyms of prolong include extend, protract.

prolong (verb)	draw out (verb)
lengthen in time; cause to be or last longer	lengthen in time; cause to be or last longer
lengthen or extend in duration or space	cause to speak
	remove by suction
	remove, usually with some force or effort; also used in an abstract sense
	deduce (a principle) or construe (a meaning)
	make more sociable