Prolongation
Part of speech: noun
Definition: The act of prolonging. That which has been prolonged; an extension.
Lengthiness
Part of speech: noun
Definition: The property of being lengthy, longness.
Difference between Prolongation and Lengthiness
What is the difference between Prolongation and Lengthiness?
Prolongation as a noun is the act of prolonging. while Lengthiness as a noun is the property of being lengthy, longness.
We hope you now know whether to use Prolongation or Lengthiness in your sentence.