disproof vs falsifying

disproof and falsifying both are nouns.

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

As nouns, disproof and falsifying are synonyms defined as:

Other synonyms of disproof include falsification, refutal, refutation.

disproof (noun)	falsifying (noun)
the act of determining that something is false	the act of determining that something is false
any evidence that helps to establish the falsity of something