protraction vs perpetuation

protraction and perpetuation both are nouns.

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

As nouns, protraction and perpetuation are synonyms defined as:

Other synonyms of protraction include lengthening, prolongation.

protraction (noun)	perpetuation (noun)
the act of prolonging something	the act of prolonging something
the consequence of being lengthened in duration