Leo I vs Pope Leo I

Leo I and Pope Leo I both are nouns.

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

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

Leo I and Pope Leo I: Italian pope from 400 to 461 who extended the authority of the papacy to the west and persuaded Attila not to attack Rome (400-461)

Other synonyms of Leo I include Leo the Great, St. Leo I.

Leo I (noun)	Pope Leo I (noun)
Italian pope from 400 to 461 who extended the authority of the papacy to the west and persuaded Attila not to attack Rome (400-461)	Italian pope from 400 to 461 who extended the authority of the papacy to the west and persuaded Attila not to attack Rome (400-461)