The differences between the two include different families, different appearances, and different tastes.

1. Different families and genera: Snow pears belong to the Rosaceae, Malinae subfamily, and Pyrus genus; winter pears belong to the Rosaceae, Malinae subfamily, and Pyrus genus.

2. Different appearance: Snow pear is yellow-white, with short fruit stem, small star spots, large and dense rust spots; winter pear has a pleasant color, yellow-green pear tail with red spots.

3. Different tastes: Sydney pears taste crisper; winter pears taste very sweet.