cognizance vs knowingness

cognizance and knowingness both are nouns.

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

As nouns, cognizance and knowingness are synonyms defined as:

Other synonyms of cognizance include awareness, cognisance, consciousness.

cognizance (noun)	knowingness (noun)
having knowledge of	having knowledge of
range of what one can know or understand	shrewdness demonstrated by knowledge
range or scope of what is perceived