Search data structure is a way of organizing our information so that it's easier to find and use. For example, imagine you have a bunch of books that you want to store on your bookshelf. You could organize them by the author's names, but it would be hard to find something if you didn't know the author's name. Instead, you could use a search data structure. You could arrange the books into categories like fiction, non-fiction, and biographies, and then mark them with keywords related to their topics, like "mystery," "pets," and "cooking." That way, it would be easier to find whatever book you were looking for.