Bishop of Rome vs Giuseppe Melchiorre Sarto

Bishop of Rome and Giuseppe Melchiorre Sarto both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bishop of Rome	Yes	No	No	No
Giuseppe Melchiorre Sarto	Yes	No	No	No

Bishop of Rome (noun)	Giuseppe Melchiorre Sarto (noun)
the head of the Roman Catholic Church	pope who condemned religious modernism; he was canonized in 1954 because of his interest in the poor (1835-1914)