The term 'arrange by categories' can be summarized by the crossword solution 'ASSORT, ' which is a six-letter word. Assorting is the process of organizing items into different groups or categories based on their characteristics. This is often done to make it easier to find items or to compare them. For example, a store might ASSORT its products by type, size, color, or price. Assorting can also be used to organize data, such as sorting a list of names alphabetically.