different between shortness vs pithiness

English

From Middle English schortnesse, from Old English s?ortness, s?eortnyss, equivalent to short +? -ness.

shortness (countable and uncountable, plural shortnesses)

(uncountable) The property of being short, of being small of stature or brief.
the shortness of a stubby pencil
the patient's shortness of breath
(countable) The result or product of being short.
(uncountable) The property of being short or terse.
I was chastened by the shortness of her reply.

pithy +? -ness

pithiness (usually uncountable, plural pithinesses)

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