The two have different leaves, different colors, and different nutritional values.

1. Different leaves: The basal leaves and lower leaves of cauliflower are oblong to oval, about 2-3.5 cm long, and the top is round. Cabbage leaves are thick and have obvious veins.

2. Different colors: Cauliflower is usually white. Kale is green and purple.

3. Different nutritional values: Cauliflower contains protein, carbohydrates, dietary fiber, fat and other minerals. Cabbage is very rich in dietary fiber, minerals, vitamins and other substances.