We use categories to organize our world and our thoughts. The aisles of a grocery store, the clothes in our closets, and the books in the library are all arranged and sorted based on categories. Our ability to understand and navigate these categories makes it easy to find what we’re looking for more efficiently. People who have difficulty speaking often have trouble with categories. They may struggle to see how items are connected, and without this connection, they have more difficulty finding the word they are looking for.