Gregory XII vs Pope Gregory XII

Gregory XII and Pope Gregory XII both are nouns.

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

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

Gregory XII and Pope Gregory XII: the Italian pope from 1406 to 1415 who worked to end the Great Schism and who retired to make it possible (1327-1417)

Other synonyms of Gregory XII include Angelo Correr, Gregory.

Gregory XII (noun)	Pope Gregory XII (noun)
the Italian pope from 1406 to 1415 who worked to end the Great Schism and who retired to make it possible (1327-1417)	the Italian pope from 1406 to 1415 who worked to end the Great Schism and who retired to make it possible (1327-1417)