I Corinthians vs First Epistle of Paul the Apostle to the Corinthians

I Corinthians and First Epistle of Paul the Apostle to the Corinthians both are nouns.

Word	Noun	Adjective	Verb	Adverb
I Corinthians	Yes	No	No	No
First Epistle of Paul the Apostle to the Corinthians	Yes	No	No	No

As nouns, I Corinthians and First Epistle of Paul the Apostle to the Corinthians are synonyms defined as:

I Corinthians and First Epistle of Paul the Apostle to the Corinthians: a New Testament book containing the first epistle from Saint Paul to the church at Corinth

Other synonyms of I Corinthians include First Epistle to the Corinthians.

I Corinthians (noun)	First Epistle of Paul the Apostle to the Corinthians (noun)
a New Testament book containing the first epistle from Saint Paul to the church at Corinth	a New Testament book containing the first epistle from Saint Paul to the church at Corinth