Gregory I vs Pope Gregory I

Gregory I and Pope Gregory I both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gregory I	Yes	No	No	No
Pope Gregory I	Yes	No	No	No

As nouns, Gregory I and Pope Gregory I are synonyms defined as:

Gregory I and Pope Gregory I: (Roman Catholic Church) an Italian pope distinguished for his spiritual and temporal leadership; a saint and Doctor of the Church (540?-604)

Other synonyms of Gregory I include Gregory, Gregory the Great, Saint Gregory I, St. Gregory I.

Gregory I (noun)	Pope Gregory I (noun)
(Roman Catholic Church) an Italian pope distinguished for his spiritual and temporal leadership; a saint and Doctor of the Church (540?-604)	(Roman Catholic Church) an Italian pope distinguished for his spiritual and temporal leadership; a saint and Doctor of the Church (540?-604)