draw out vs prolong

draw out and prolong both are verbs.

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

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

Other synonyms of draw out include extend, protract.

draw out (verb)	prolong (verb)
lengthen in time; cause to be or last longer	lengthen in time; cause to be or last longer
cause to speak	lengthen or extend in duration or space
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