The term 'not just decorative' can be summarized by the crossword solutions of 'USEFUL', 'UTILE', and 'ofuse'. These words all refer to something that is not only aesthetically pleasing, but also has a practical purpose. 'USEFUL' and 'UTILE' both mean that something is helpful or advantageous, while 'ofuse' is an acronym for 'Objects For Use', which refers to items that are designed to be used for a specific purpose. All three words indicate that something is not just decorative, but has a practical use as well.