jurisprudence vs bear witness

jurisprudence is a noun but bear witness is not a noun.

Word	Noun	Adjective	Verb	Adverb
jurisprudence	Yes	No	No	No
bear witness	No	No	Yes	No

jurisprudence (noun)	bear witness (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)	bear witness (verb)
	give testimony in a court of law
	provide evidence for