murder vs falsify

murder is a noun but falsify is not a noun.

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

As verbs, falsify is a hypernym of murder; that is, falsify is a word with a broader meaning than murder:

Other hypernyms of murder include distort, garble, warp.

murder (noun)	falsify (noun)
unlawful premeditated killing of a human being by a human being

murder (verb)	falsify (verb)
alter so as to make unrecognizable	falsify knowingly
kill intentionally and with premeditation	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