St. James the Apostle vs Saint James

St. James the Apostle and Saint James both are nouns.

Word	Noun	Adjective	Verb	Adverb
St. James the Apostle	Yes	No	No	No
Saint James	Yes	No	No	No

As nouns, St. James the Apostle and Saint James are synonyms defined as:

St. James the Apostle and Saint James: (New Testament) disciple of Jesus; brother of John; author of the Epistle of James in the New Testament

Other synonyms of St. James the Apostle include James, Saint James the Apostle, St. James.

St. James the Apostle (noun)	Saint James (noun)
(New Testament) disciple of Jesus; brother of John; author of the Epistle of James in the New Testament	(New Testament) disciple of Jesus; brother of John; author of the Epistle of James in the New Testament