인공어를 공부하는 학문은 무엇인가?
The field of interlinguistics is concerned with international planned languages [also called ‘constructed languages‘, ‘auxiliary languages‘, or ‘artificial languages‘] as Esperanto, and with the relationship between planned languages and language planning. Increasingly, undergraduate courses in planned languages are expanding to embrace not only the history of languages planned for international use, but also the field of imaginary and fictional languages. Interlinguistics is also concerned with investigating how ethnic and international planned languages work as lingua franca and with the possibilities of optimizing interlinguistic communication. 
interlinguistics