Difference between Quietness and Quietude

QUIETNESS vs QUIETUDE: NOUN

Absence of disturbance; calm, stillness or serenity.
Absence of sound; silence or hush.
The quality or state of being quiet; freedom from noise, agitation, disturbance, or excitement; stillness; tranquillity; calmness.
The state of being quiet, still, or free from action or motion; freedom from agitation, disturbance, or excitement; tranquillity; stillness; calmness.
A state of peace and quiet
The property of making no sound

Cools, Eases, Normalcy, Peace, Ease, Silence, Lull, Calming, Calm, Tranquil, Calmness, Soundlessness, Tranquillity, Tranquility, Quietude

Reverie, Contentment, Equanimity, Contemplation, Calmness, Restfulness, Placidity, Peacefulness, Solitude, Stillness, Serenity, Uncheerful, Tranquillity, Quietness, Tranquility

Peacefulness, Clam, Easing, Normalcy, Peace, Ease, Silence, Lull, Calming, Calm, Tranquil, Calmness, Tranquillity, Tranquility, Quietude

Seclusion, Reverie, Contentment, Equanimity, Contemplation, Calmness, Restfulness, Placidity, Peacefulness, Solitude, Stillness, Serenity, Uncheerful, Tranquillity, Tranquility

Thus the effect here is to cancel one quantum of quietness.
The results are industry leading battery life and unparalleled quietness.
The most unique part of this shaver is its quietness.
Basic Instincte quietness, cleanliness, and orderliness of the cinematic neighborhood.
In the presence of such quietness despair wakens into peace.
The quietness of his love will calm you down.
With virtue and quietness one may conquer the world.
Spending time outdoors and enjoying the quietness of nature.
An Ideal Family Home who Loves peace and quietness.
Leonard, I could be happy in this quietness.

It was impossible to follow the course in quietude, for those were stirring times of revolutionary conflict.
Before him was smiling country, streaming with sunshine, lazy with quietude.
The physician said the country air and quietude are most necessary.
Its entrance is a small hole, and no incense or sacrifices ever trouble the quietude.
With Italian origins, and has not its equal for quietude in England brioche.
In Nova Scotian superstition we find demons charmed by drums into quietude.
May her soul rest in peace Earned respect through humility and quietude.
Meditate, pray, seek out places of quietude and peace.
Feeling utter calm and unruffled repose or quietude.
Twelve knew well that their Master sought quietude.