Difference between Lengthening and Prolongation

What is the difference between Lengthening and Prolongation?

Lengthening as a noun is a type of sound change when a sound (especially a vowel) lengthens while Prolongation as a noun is the act of prolonging.

Part of speech: verb

Definition: To make longer, to extend the length of.

Part of speech: noun

Definition: a type of sound change when a sound (especially a vowel) lengthens

Part of speech: noun

Definition: The act of prolonging.That which has been prolonged; an extension.

We hope you now know whether to use Lengthening or Prolongation in your sentence.