different between coolness vs sober-mindeness

English

From Middle English colnes, colnesse, from Old English c?lnes, c?lnes (“coolness; cool air, breeze”); equivalent to cool +? -ness.

coolness (usually uncountable, plural coolnesses)

(uncountable) The state of being cool, i.e. chilly.
(countable) The result or product of being cool, i.e. chilly.
(uncountable) The state of being cool, i.e. calm.
Indifference; lack of passion or interest.
(slang, uncountable) The state of being cool, i.e. good or pleasing.
(slang, countable) The result or product of being cool, i.e. good or pleasing. (Can we add an example for this sense?)

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