book vs I Esdra

book and I Esdra both are nouns.

Word	Noun	Adjective	Verb	Adverb
book	Yes	No	Yes	No
I Esdra	Yes	No	No	No

book (noun)	I Esdra (noun)
physical objects consisting of a number of pages bound together	an Apocryphal book consisting of a compilation from I Chronicles and II Chronicles and Ezra and Nehemiah
a number of sheets (ticket or stamps etc.) bound together on one edge
a written work or composition that has been published (printed on pages bound together)
a written version of a play or other dramatic composition; used in preparing for a performance
a compilation of the known facts regarding something or someone
a major division of a long written composition
a collection of rules or prescribed standards on the basis of which decisions are made
a collection of playing cards satisfying the rules of a card game
a record in which commercial accounts are recorded

book (verb)	I Esdra (verb)
engage for a performance
record a charge in a police register
arrange for and reserve (something for someone else) in advance
register in a hotel booker