Originally jumper was sportswear. The name comes from the English "jumper" - jumper. Cardigan is knitted wear, wear it over her head. Initially, this type of clothing had no buckles, no collar.
Until the 50s of the last century cardigan was part of fitness for athletics. Then he gradually moved into everyday wardrobe, first male and then female. Modern fashion admits jumper as an element of business style.
Over the past few decades, fashion has changed repeatedly. Changed and jumper. Sometimes he has a small collar - Eton or very small reception. There are sweaters and short zipper. It should be short, and this is what distinguishes cardigan sweaters on. The shape of the neck at the collarless cardigan can be any. Sleeve also make different lengths. Knitwear can be both machine and hand.