cognizance vs cognisance

cognizance and cognisance both are nouns.

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

As nouns, cognizance and cognisance are synonyms defined as:

Other synonyms of cognizance include awareness, consciousness, knowingness.

cognizance (noun)	cognisance (noun)
having knowledge of	having knowledge of
range of what one can know or understand
range or scope of what is perceived