Book Bank
A book bank is a system that gathers, stores, and lends study materials and books to students for a certain amount of time (often a semester or academic year). The printed materials are reclaimed afterwards for proper usage so that new students are able to access them again.

Library
The term "library" is a place or establishment where an assortment of literature, periodicals, newspapers, and digital materials are arranged and made accessible for perusal, reference, or exchange.

A book bank is a system where:
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Students borrow textbooks for a full academic year/semester
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Books are returned after use
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The same books are reused by other student
Main purpose:
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Help financially weak students
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Reduce cost of education
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Promote sharing & reuse culture
The library is a reading and learning space with:
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Academic books (school, college)
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Competitive exam materials (SSC, UPSC, NEET, etc.)
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Newspapers & magazines
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General reading books
Libraries often include the following:
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Reading room
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Reference books (cannot be taken home)
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Digital or e-book access (in some centers)
