Language for specific purposes (LSP) is a type of English that is used in a certain area or field, like engineering or medicine. Think of it like a special language for a particular job. LSP has a lot of special words and phrases that you might not learn in general English classes. For example, a doctor might use words like "stethoscope" and "incision" when talking with other doctors, but a regular English class won't teach these words. LSP is really helpful for people who are studying a specific field or work in a particular area, because it helps them communicate with each other easily and quickly.