pen

A pen is a small instrument used for writing or drawing on paper. It typically contains ink inside a reservoir, which flows to a tip through a controlled medium, such as a ball, nib, or felt. When pressed against paper, ink is transferred, leaving a mark that forms words or images. Pens come in various types, including ballpoint, fountain, and felt-tip, each with different ink delivery methods. They are essential tools for communication, enabling the creation of permanent or temporary markings, and are widely used in personal, educational, and professional settings.