The portion of a Stove, Range, or Cooker where the burners are located. May also be referred to as a Cook top, or Hob, however, a Stove top will always be found on a stove. Whereas a Cook top or Hob may or may not be part of a stove, and are often found as separate and independent appliances.
On my Frigidaire gas stove, I have two burner sizes: one 2 3/4" in diameter and three 2 1/4." These burners seem to be interchangeable with all the orifices. I would like to have an even smaller ...