cognisance vs knowingness

cognisance and knowingness both are nouns.

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

As nouns, cognisance and knowingness are synonyms defined as:

Other synonyms of cognisance include awareness, cognizance, consciousness.

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