It seems there might be a little confusion with the term "i esdra." This term relates to a specific religious text, but it's not commonly used in everyday English conversation. Let me break it down for you.
"I Esdra" (also known as "1 Esdras") is a noun that refers to a book that is part of the Apocrypha. The Apocrypha is a collection of ancient texts that are not included in the standard biblical canon for many Christian denominations. "I Esdra" is a compilation that includes material from the books of 1 Chronicles, 2 Chronicles, Ezra, and Nehemiah, which are found in the Old Testament of the Bible.
"I Esdra" is a specialized term used mostly in religious studies.