falsification vs knavery

falsification and knavery both are nouns.

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

As nouns, knavery is a hypernym of falsification; that is, knavery is a word with a broader meaning than falsification:

falsification: the act of rendering something false as by fraudulent changes (of documents or measures etc.) or counterfeiting
knavery: lack of honesty; acts of lying or cheating or stealing

Other hypernyms of falsification include dishonesty.

falsification (noun)	knavery (noun)
the act of rendering something false as by fraudulent changes (of documents or measures etc.) or counterfeiting	lack of honesty; acts of lying or cheating or stealing
the act of determining that something is false
a willful perversion of facts
any evidence that helps to establish the falsity of something