The document discusses the scope and definition of applied linguistics. It begins by stating that applied linguistics is not exclusively about language teaching, but also involves other fields that utilize linguistic knowledge like speech therapy, literary criticism, and communications engineering. It then distinguishes applied linguistics as an activity rather than a theoretical study, using linguistic findings to address practical problems. Finally, it maps out the scope of applied linguistics by classifying its areas of study into three categories: language and education, language, work, and law, and language, information, and effect. Several examples are provided for each category to illustrate the broad and diverse range of activities to which applied linguistics is relevant.