Mark the Evangelist vs Saint Mark

Mark the Evangelist and Saint Mark both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mark the Evangelist	Yes	No	No	No
Saint Mark	Yes	No	No	No

As nouns, Mark the Evangelist and Saint Mark are synonyms defined as:

Mark the Evangelist and Saint Mark: Apostle and companion of Saint Peter; assumed to be the author of the second Gospel

Other synonyms of Mark the Evangelist include Mark, St. Mark.

Mark the Evangelist (noun)	Saint Mark (noun)
Apostle and companion of Saint Peter; assumed to be the author of the second Gospel	Apostle and companion of Saint Peter; assumed to be the author of the second Gospel