Twisty Turns is a term used to describe a type of roller coaster track that features sharp turns and sudden drops. The two crossword solutions, ESSES and ACPEX, are both five-letter words that refer to different types of twisty turns. ESSES stands for 'Elements of Surprise and Special Effects, ' which are elements of a roller coaster track that create unexpected surprises and thrills. ACPEX stands for 'Air Coaster with Prefabricated Elements, ' which is a type of roller coaster track that features prefabricated elements such as loops, corkscrews, and helixes.