John the Divine vs St. John the Apostle

John the Divine and St. John the Apostle both are nouns.

Word	Noun	Adjective	Verb	Adverb
John the Divine	Yes	No	No	No
St. John the Apostle	Yes	No	No	No

As nouns, John the Divine and St. John the Apostle are synonyms defined as:

John the Divine and St. John the Apostle: (New Testament) disciple of Jesus; traditionally said to be the author of the 4th Gospel and three epistles and the book of Revelation

Other synonyms of John the Divine include John, John the Evangelist, Saint John, Saint John the Apostle, St. John.

John the Divine (noun)	St. John the Apostle (noun)
(New Testament) disciple of Jesus; traditionally said to be the author of the 4th Gospel and three epistles and the book of Revelation	(New Testament) disciple of Jesus; traditionally said to be the author of the 4th Gospel and three epistles and the book of Revelation