falsification vs falsify

falsification is a noun but falsify is not a noun.

Word	Noun	Adjective	Verb	Adverb
falsification	Yes	No	No	No
falsify	No	No	Yes	No

falsification (noun)	falsify (noun)
the act of rendering something false as by fraudulent changes (of documents or measures etc.) or counterfeiting
the act of determining that something is false
a willful perversion of facts
any evidence that helps to establish the falsity of something

falsification (verb)	falsify (verb)
	falsify knowingly
	insert words into texts, often falsifying it thereby
	prove false
	make false by mutilation or addition; as of a message or story
	tamper, with the purpose of deception