Putting corpus to practical use in data analysis has come into the spotlight, and suggests new possibilities and methodologies in the field of linguistics and the practical application of linguistics. Study based on corpus begins with pure linguistics, analyzing the use of language in natural situations. In an attempt to search out possible applications as practical instruction, recently, the field of study has expanded to include the study of foreign languages. In particular, the use of corpus and its possible practical applications in applied linguistics and foreign language learning with computer assistance(as well as other areas), the expansion of the field has been due to the development of data processing techniques using various medium. On the other hand, corpus linguistics based on methodology consists of borrowing from another study methodology, making it the prevalent study through its connection, rather than attempting an independent methodology. In addition, metric linguistics, based on corpus is reaching for more meaningful result deduction through the unification of contiguity studies.