falsifying vs refutal

falsifying and refutal both are nouns.

Word	Noun	Adjective	Verb	Adverb
falsifying	Yes	No	No	No
refutal	Yes	No	No	No

As nouns, falsifying and refutal are synonyms defined as:

Other synonyms of falsifying include disproof, falsification, refutation.

falsifying (noun)	refutal (noun)
the act of determining that something is false	the act of determining that something is false