jurisprudence vs Richard Roe

jurisprudence and Richard Roe both are nouns.

Word	Noun	Adjective	Verb	Adverb
jurisprudence	Yes	No	No	No
Richard Roe	Yes	No	No	No

jurisprudence (noun)	Richard Roe (noun)
the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do	an unknown or fictitious party to legal proceedings
the collection of rules imposed by authority