Saint Jude vs Thaddaeus

Saint Jude and Thaddaeus both are nouns.

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

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

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

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

Saint Jude (noun)	Thaddaeus (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