Applied Linguistics, specialty Empirical Linguistics and Language Documentation

Applied linguistics is an interdisciplinary field of linguistics which identifies, investigates, and offers solutions to language-related real-life problems. Some of the academic fields related to applied linguistics are education, psychology, communication research, anthropology, and sociology.

Documentation is a set of documents provided on paper, or online, or on digital or analog media, such as audio tape or CDs. Examples are user guides, white papers, on-line help, quick-reference guides. It is becoming less common to see paper (hard-copy) documentation. Documentation is distributed via websites, software products, and other on-line applications.

Language is a system that consists of the development, acquisition, maintenance and use of complex systems of communication, particularly the human ability to do so; and a language is any specific example of such a system.

Language documentation (also: documentary linguistics) is a subfield of linguistics which aims to describe the grammar and use of human languages. It aims to provide a comprehensive record of the linguistic practices characteristic of a given speech community. Language documentation seeks to create as thorough a record as possible of the speech community for both posterity and language revitalization. Language documentation also provides a firmer foundation for linguistic analysis in that it creates a citable set of materials in the language on which claims about the structure of the language can be based.

Linguistics is the scientific study of language, and involves an analysis of language form, language meaning, and language in context. The earliest activities in the documentation and description of language have been attributed to the 6th century BC Indian grammarian Pāṇini, who wrote a formal description of the Sanskrit language in his Aṣṭādhyāyī.