Thaddaeus vs Saint Jude

Thaddaeus and Saint Jude both are nouns.

Word	Noun	Adjective	Verb	Adverb
Thaddaeus	Yes	No	No	No
Saint Jude	Yes	No	No	No

As nouns, Thaddaeus and Saint Jude are synonyms defined as:

Thaddaeus and Saint Jude: (New Testament) supposed brother of St. James; one of the Apostles who is invoked in prayer when a situation seems hopeless

Other synonyms of Thaddaeus include Judas, Jude, Jude the Apostle, St. Jude.

Thaddaeus (noun)	Saint Jude (noun)
(New Testament) supposed brother of St. James; one of the Apostles who is invoked in prayer when a situation seems hopeless	(New Testament) supposed brother of St. James; one of the Apostles who is invoked in prayer when a situation seems hopeless