Original: A drum set ( also drum kit or trap set ) is a collection of drums , cymbals and sometimes other percussion instruments , such as cowbells , wood blocks , triangles , chimes , or tambourines , arranged for convenient playing by a single person ( drummer ) .
Simplified: A drum kit ( or drum set or trap set ) is a collection of drums , cymbals , and other percussion instruments that is used by a drummer in a musical group .