Vicar of Christ vs Hildebrand

Vicar of Christ and Hildebrand both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vicar of Christ	Yes	No	No	No
Hildebrand	Yes	No	No	No

Vicar of Christ (noun)	Hildebrand (noun)
the head of the Roman Catholic Church	the Italian pope who fought to establish the supremacy of the pope over the Roman Catholic Church and the supremacy of the church over the state (1020-1085)