knowingness vs cognisance

knowingness and cognisance both are nouns.

Word	Noun	Adjective	Verb	Adverb
knowingness	Yes	No	No	No
cognisance	Yes	No	No	No

As nouns, knowingness and cognisance are synonyms defined as:

Other synonyms of knowingness include awareness, cognizance, consciousness.

knowingness (noun)	cognisance (noun)
having knowledge of	having knowledge of
shrewdness demonstrated by knowledge