The term 'Jump Skater' refers to a figure skater who performs jumps during their routine. An Axel is a type of jump in figure skating, which involves taking off from the back outside edge of one foot and rotating 1½ times in the air before landing on the back outside edge of the opposite foot. It is considered the most difficult single jump in figure skating and is named after its inventor, Norwegian figure skater Axel Paulsen.