File refers to a storage unit or container used for storing data, documents, or information in a computer system or file system. Files are organized hierarchically within directories or folders and can contain various types of data such as text, images, audio, video, or binary data. File operations include creating, reading, writing, updating, and deleting files using file system APIs or file management utilities provided by operating systems or programming languages. Files are commonly used for data storage, data exchange, and persistent storage of application data.