Applied linguistics is an interdisciplinary field that applies linguistic theories and knowledge about language to solve real-world language problems. It aims to answer how linguistic models can be used to address practical language issues. Applied linguistics involves utilizing what is known about language, how it is learned and used. Key areas include foreign language education, methodology, and second language acquisition theory and pedagogy. It is defined as using linguistic research findings to improve tasks involving language. The primary goal of applied linguistics is to make abstract linguistic ideas practical and relevant to solving basic language problems.