St. John the Apostle vs John the Evangelist

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

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

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

St. John the Apostle and John the Evangelist: (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 St. John the Apostle include John, John the Divine, Saint John, Saint John the Apostle, St. John.

St. John the Apostle (noun)	John the Evangelist (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