The term 'Frequent Change of FASHION' is often used to describe the ever-changing nature of FASHION trends. The term can be broken down into two parts: 'Frequent Change' and 'FASHION'. The crossword solution for 'Frequent Change' is 'HEMLINE', which refers to the length of a garment's skirt or dress. Hemlines are often used to indicate the current FASHION trend, as they can quickly change from season to season. Therefore, the term 'Frequent Change of FASHION' can be used to describe the ever-changing nature of FASHION trends, with HEMLINE lengths being a key indicator of the current trend.