Clarity
Part of speech: noun
Definition: The state, or measure of being clear, either in appearance, thought or style; lucidity
Example sentence: Take advantage of every opportunity to practice your communication skills so that when important occasions arise, you will have the gift, the style, the sharpness, the clarity, and the emotions to affect other people.
Lucidness
Part of speech: noun
Definition: The property of being lucid; lucidity.