Bishop of Rome vs Bartolomeo Prignano

Bishop of Rome and Bartolomeo Prignano both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bishop of Rome	Yes	No	No	No
Bartolomeo Prignano	Yes	No	No	No

Bishop of Rome (noun)	Bartolomeo Prignano (noun)
the head of the Roman Catholic Church	Italian pope from 1378 to 1389 whose contested election began the Great Schism; he alienated his political allies by his ruthless treatment of his opponents (1318-1389)