different between tactlessness vs factlessness

English

From tactless +? -ness

tactlessness (countable and uncountable, plural tactlessnesses)

(uncountable) The state or quality of being tactless.
His tactlessness combined with his bluntness made him many enemies.
(countable) The result or product of being tactless.

factless +? -ness

factlessness (uncountable)

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