Applied linguistics is a field of study that aims to understand and improve real-world communication issues using linguistic theories and methods. It deals with practical problems related to language use and learning, such as language teaching, language assessment, language policy, translation, and language planning. Applied linguists work to solve language-related problems in various settings, such as education, healthcare, business, and government. They draw on insights from linguistics, psychology, sociology, and other disciplines to address complex language issues in diverse contexts.