different between bluntness vs inelegance

English

From Middle English bluntnes, bluntnesse, equivalent to blunt +? -ness.

bluntness (countable and uncountable, plural bluntnesses)

From Middle French inélégance, from Late Latin inelegantia

inelegance (usually uncountable, plural inelegances)

The state or quality of being inelegant; lack of grace, refinement, beauty, or polish in language, composition, or manners.
The inelegance of the ugly duckling stood in contrast to its ultimate life as a swan.

(state or quality of being inelegant): awkwardness, bluntness, clumsiness, gracelessness, homeliness

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