Saint James vs St. James

Saint James and St. James both are nouns.

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

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

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

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

Saint James (noun)	St. 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