jurisprudence vs testify

jurisprudence is a noun but testify is not a noun.

Word	Noun	Adjective	Verb	Adverb
jurisprudence	Yes	No	No	No
testify	No	No	Yes	No

jurisprudence (noun)	testify (noun)
the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do
the collection of rules imposed by authority

jurisprudence (verb)	testify (verb)
	give testimony in a court of law
	provide evidence for