lengthiness vs protraction

lengthiness and protraction both are nouns.

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

As nouns, lengthiness and protraction are synonyms defined as:

lengthiness and protraction: the consequence of being lengthened in duration

Other synonyms of lengthiness include continuation, prolongation.

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