In the study of language, description or descriptive linguistics is the work of objectively analyzing and describing how language is actually used (or how it was used in the past) by a speech community.
All academic research in linguistics is descriptive; like all other scientific disciplines, it aims to describe reality, without the bias of preconceived ideas about how it ought to be. Modern descriptive linguistics is based on a structural approach to language, as exemplified in the work of Leonard Bloomfield and others. This type of linguistics utilizes different methods in order to describe a language such as basic data collection, and different types of elicitation methods.
Descriptive versus prescriptive linguistics
Linguistic description, as used in academic and professional linguistics, is often contrasted with linguistic prescription, which is found especially in general education, language arts instruction, and the publishing industry.
As English-linguist Larry Andrews describes it, descriptive grammar is the linguistic approach which studies what a language is like, as opposed to prescriptive, which declares what a language should be like. In other words, descriptive grammarians focus analysis on how all kinds of people in all sorts of environments, usually in more casual, everyday settings, communicate, whereas prescriptive grammarians focus on the grammatical rules and structures predetermined by linguistic registers and figures of power. Andrews also believes that, although most linguists would be descriptive grammarians, most public school teachers tend to be prescriptive. While speech that comes naturally is preferred, researchers use elicitation, by asking speakers for translations, grammar rules, pronunciation, or by testing sentences using substitution frames. Substitution frames are pre-made sentences put together by the researcher that are like fill in the blanks. They do this with nouns and verbs to see how the structure of the sentence might change or how the noun and verb might change in structure. Syntax has developed to describe how words relate to each other in order to form sentences. Lexicology collects words as well as their derivations and transformations: it has not given rise to much generalized theory.
Linguistics description might aim to achieve one or more of the following goals: