Form elements are the building blocks of web forms, allowing users to input data. Common types include text fields, checkboxes, radio buttons, and dropdown menus. Each element serves a specific purpose, such as collecting names, preferences, or choices from users. These elements are essential for user interaction on websites and applications. They help gather information for various purposes, like registration, surveys, or feedback. Properly designed form elements enhance user experience and ensure that data is collected efficiently and accurately.