I Esdra vs 1 Esdras

I Esdra and 1 Esdras both are nouns.

Word	Noun	Adjective	Verb	Adverb
I Esdra	Yes	No	No	No
1 Esdras	Yes	No	No	No

As nouns, I Esdra and 1 Esdras are synonyms defined as:

I Esdra and 1 Esdras: an Apocryphal book consisting of a compilation from I Chronicles and II Chronicles and Ezra and Nehemiah

I Esdra (noun)	1 Esdras (noun)
an Apocryphal book consisting of a compilation from I Chronicles and II Chronicles and Ezra and Nehemiah	an Apocryphal book consisting of a compilation from I Chronicles and II Chronicles and Ezra and Nehemiah