jurisprudence vs attorn

jurisprudence is a noun but attorn is not a noun.

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

jurisprudence (noun)	attorn (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)	attorn (verb)
	acknowledge a new land owner as one's landlord