sweatsuit

As nouns the difference between jumper and sweatsuit

is that jumper is someone or something that jumps, eg a participant in a jumping event in track or skiing or jumper can be (chiefly|british|australian) a woolen sweater or pullover while sweatsuit is a two-piece garment worn during exercise.

As a verb jumper

is to connect with an electrical jumper.

As nouns the difference between tracksuit and sweatsuit

is that tracksuit is a garment, usually consisting of a top and trousers (commonly known as tracksuit bottoms) worn as an outer layer by participants in sporting events such as athletics. The tracksuit is usually designed to be easily removed or replaced, before or after competing. Tracksuits have also been adopted in some cultures as leisurewear while sweatsuit is a two-piece garment worn during exercise.