Luke the Evangelist vs Saint Luke

Luke the Evangelist and Saint Luke both are nouns.

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

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

Luke the Evangelist and Saint Luke: (New Testament) the Apostle closely associated with St. Paul and traditionally assumed to be the author of the third Gospel

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

Luke the Evangelist (noun)	Saint Luke (noun)
(New Testament) the Apostle closely associated with St. Paul and traditionally assumed to be the author of the third Gospel	(New Testament) the Apostle closely associated with St. Paul and traditionally assumed to be the author of the third Gospel