Vicar of Christ vs Giuseppe Sarto

Vicar of Christ and Giuseppe Sarto both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vicar of Christ	Yes	No	No	No
Giuseppe Sarto	Yes	No	No	No

Vicar of Christ (noun)	Giuseppe 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)