Passion of Christ vs Passion

Passion of Christ and Passion both are nouns.

Word	Noun	Adjective	Verb	Adverb
Passion of Christ	Yes	No	No	No
Passion	Yes	No	No	No

As nouns, Passion of Christ and Passion are synonyms defined as:

Passion of Christ and Passion: the suffering of Jesus at the Crucifixion

Passion of Christ (noun)	Passion (noun)
the suffering of Jesus at the Crucifixion	the suffering of Jesus at the Crucifixion