jurisprudence vs Justice Department

jurisprudence and Justice Department both are nouns.

Word	Noun	Adjective	Verb	Adverb
jurisprudence	Yes	No	No	No
Justice Department	Yes	No	No	No

jurisprudence (noun)	Justice Department (noun)
the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do	the United States federal department responsible for enforcing federal laws (including the enforcement of all civil rights legislation); created in 1870
the collection of rules imposed by authority