Leo IX vs Pope Leo IX

Leo IX and Pope Leo IX both are nouns.

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

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

Leo IX and Pope Leo IX: German pope from 1049 to 1054 whose papacy was the beginning of papal reforms in the 11th century (1002-1054)

Other synonyms of Leo IX include Bruno, Bruno of Toul.

Leo IX (noun)	Pope Leo IX (noun)
German pope from 1049 to 1054 whose papacy was the beginning of papal reforms in the 11th century (1002-1054)	German pope from 1049 to 1054 whose papacy was the beginning of papal reforms in the 11th century (1002-1054)