prolongation vs prolong

prolongation is a noun but prolong is not a noun.

Word	Noun	Adjective	Verb	Adverb
prolongation	Yes	No	No	No
prolong	No	No	Yes	No

prolongation (noun)	prolong (noun)
the act of prolonging something
amount or degree or range to which something extends
the consequence of being lengthened in duration

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