Applied linguistics uses knowledge from linguistics and other fields like psychology, sociology, and anthropology to investigate and solve practical language-related problems in various contexts. It applies linguistic theories and methods to issues in areas such as education, workplace communication, language planning, and translation. While linguistics studies language in the abstract, applied linguistics is problem-driven and seeks to understand how language operates in real-world situations. It establishes a reciprocal relationship between theoretical expertise and practical experience with language issues. Applied linguistics plays an important role in language education by drawing on linguistic theories to inform teaching methods and stimulate innovation in language pedagogy.