continuation vs lengthiness

continuation and lengthiness both are nouns.

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

As nouns, continuation and lengthiness are synonyms defined as:

continuation and lengthiness: the consequence of being lengthened in duration

Other synonyms of continuation include prolongation, protraction.

continuation (noun)	lengthiness (noun)
the act of continuing an activity without interruption	amount or degree or range to which something extends
the consequence of being lengthened in duration	the consequence of being lengthened in duration
a Gestalt principle of organization holding that there is an innate tendency to perceive a line as continuing its established direction
a part added to a book or play that continues and extends it