perpetuation vs prolongation

perpetuation and prolongation both are nouns.

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

As nouns, perpetuation and prolongation are synonyms defined as:

Other synonyms of perpetuation include lengthening, protraction.

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