therefor vs jurisprudence

therefor is not a noun while jurisprudence is a noun.

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

therefor (noun)	jurisprudence (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

therefor (adverb)	jurisprudence (adverb)
(in formal usage, especially legal usage) for that or for it