protraction vs lengthiness

protraction and lengthiness both are nouns.

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

As nouns, protraction and lengthiness are synonyms defined as:

protraction and lengthiness: the consequence of being lengthened in duration

Other synonyms of protraction include continuation, prolongation.

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