What's the difference between cognisance and knowingness?

Cognisance

Definition:

Example Sentences:

Definition:

(n.) The state or quality of being knowing or intelligent; shrewdness; skillfulness.

Example Sentences:

(1) "Bill Hicks had a cynicism and a knowingness, but Williams was like a child – everything was possible.
(2) Stupidity might just retain its integrity in the face of totalitarianism, but knowingness never could.
(3) It is a brilliant piece of reclamation, not least because Dunham doesn't turn it into a hand-wringing essay on women and body shape, but incorporates the issue, with a sly kind of knowingness, into a much broader piece about sexual and emotional maturity.
(4) Listening to his broadcasts, with their humility and knowingness, he sounds like the first news presenter who has – finally – absorbed the impact of The Day Today, which punctured the absurdity of news media nearly 20 years ago, seemingly without affecting them.
(5) In these films, however, what was being concealed by the soft-focus romance (very distant from Jane Austen’s shrewd knowingness) was not the workings of empire, but the first stirrings of its recuperation, as a remnant of very distant history that would be tacitly acknowledged but never regretted.
(6) A dutiful enigma, say her flatterers, or a conveniently empty vessel into which Helen Mirren can imagine any amount of knowingness and intelligence.