tax law vs jurisprudence

tax law and jurisprudence both are nouns.

Word	Noun	Adjective	Verb	Adverb
tax law	Yes	No	No	No
jurisprudence	Yes	No	No	No

As nouns, jurisprudence is a hypernym of tax law; that is, jurisprudence is a word with a broader meaning than tax law:

Other hypernyms of tax law include law.

tax law (noun)	jurisprudence (noun)
the body of laws governing taxation	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