Description: In the context of React and Vue.js, ‘prop’ is short for ‘properties’, which refers to a fundamental mechanism for communication between components. Props allow parent components to pass data and configurations to their child components, thus facilitating the creation of dynamic and reusable user interfaces. This approach promotes separation of concerns, as components can be designed to be independent and receive the necessary information through props. In React, props are immutable, meaning a child component cannot modify the props it receives, thus ensuring data integrity. In Vue.js, props are also used similarly, allowing data transmission from a parent component to a child one, with the flexibility to define expected data types and validations. The use of props is essential for building scalable and maintainable applications, as it allows for a clear data hierarchy and effective communication between interface components. In summary, props are a key feature in both frameworks that facilitate the creation of interactive and modular web applications.