The jig is a Celtic dance which takes its name from the type of music to which it is danced, also called a 'jig.' The music takes its name from the French word 'gigue,' which is an older word for a fiddle (violin). Therefore, an Irish jig is one of many cultural dances that is done to fiddle music, specifically, Celtic fiddle music. There are Irish and Scottish variants of jig music, but the most well known of the jigs is the Irish jig.
A jig is danced with a lot of hopping, making it into a joyful dance; jigs are often danced at weddings and other types of celebrations.
A traditional Irish jig is a series of hops and steps that repeat themselves over and over again. The steps are very simple, either stepping forward or taking steps backwards, but the hops can require some practice in getting the timing and coordination right.