different between indifference vs coolness

English

From Middle French indifférence, from Late Latin indifferentia

indifference (countable and uncountable, plural indifferences)

The state of being indifferent.
Unbiased impartiality.
Unemotional apathy.
His daughter's indifference towards the sexist group made him wonder if she was even human.
A lack of enthusiasm.
Unconcerned nonchalance.

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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