They are all the same family of pea, but they are sold at different stages of maturity. Snow peas are flat with barely formed peas inside. Sugarsnaps contain more developed, plump peas, but are not as mature as garden peas.
Use a stainless-steel potato peeler and put the peeled pears into a bowl of cold water. Add the juice of a large lemon or 2-3 tablespoons of bottled lemon juice. Alternatively, depending on the recipe you have chosen, the pears