Angelo Guiseppe Roncalli vs John XXIII

Angelo Guiseppe Roncalli and John XXIII both are nouns.

Word	Noun	Adjective	Verb	Adverb
Angelo Guiseppe Roncalli	Yes	No	No	No
John XXIII	Yes	No	No	No

As nouns, Angelo Guiseppe Roncalli and John XXIII are synonyms defined as:

Angelo Guiseppe Roncalli and John XXIII: Italian pope from 1958 to 1963 who convoked the Second Vatican Council (1881-1963)

Other synonyms of Angelo Guiseppe Roncalli include Pope John XXIII.

Angelo Guiseppe Roncalli (noun)	John XXIII (noun)
Italian pope from 1958 to 1963 who convoked the Second Vatican Council (1881-1963)	Italian pope from 1958 to 1963 who convoked the Second Vatican Council (1881-1963)