Book

кни́га

kníga

(collection of sheets of paper bound together containing printed or written material)

либре́то

libréto

(script of a musical)

счетово́дна кни́га

sčetovódna kníga

(usually in plural: records of the accounts of a business)

том

tom

(major division of a published work, larger than a chapter)

запазвам

zapazvam

(to reserve)

записвам

zapisvam

(to write down, register, record)