Search functions are tools that help users find specific information within a database, website, or application. They allow users to enter keywords or phrases, which the system then uses to locate relevant content. This can include text, images, or other data types, making it easier to navigate large amounts of information. These functions often include features like filters, sorting options, and advanced search techniques to refine results. Popular examples of search functions can be found in platforms like Google, Amazon, and social media sites, where users can quickly access the information they need with minimal effort.