Library and information science (LIS) are two academic disciplines that study all aspects of the creation, organization, documentation, management, communication, and use of recorded information. It underlies a variety of professional activities such as information management, librarianship, and archiving and records management, educating professionals for work in those areas, and carrying out research to improve practice. Library science and information science are two original disciplines; however, they are within the same field of study. Library science is applied information science, as well as a subfield of information science. Due to the strong connection, sometimes the two terms are used synonymously. Source: Wikipedia (en)