different between aggressiveness vs boldness

English

aggressive +? -ness

aggressiveness (usually uncountable, plural aggressivenesses)

(uncountable) The state or quality of being aggressive.
(uncountable) The propensity of a soil or water to dissolve metal or cement structures.
The aggressiveness of various sulfate salts towards concrete is partly related to solubility.
(countable) The result or product of being aggressive.

From Middle English boldnesse, equivalent to bold +? -ness. Cognate with Scots baldness, bauldness (“boldness”).

boldness (usually uncountable, plural boldnesses)

The state of being bold; courage.
- 1906, Rudyard Kipling, Puck of Pook's Hill
  Then he warmed to it, and smoothly set out all his shifts, malices, and treacheries, his extreme boldnesses (he was desperate bold); his retreats, shufflings, and counterfeitings (he was also inconceivably a coward) […]
presumptuousness
(typography) The relative weight of a font; the thickness of its strokes.

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