The descriptions are different.

1. Refers to the expression of malnutrition due to mainly eating vegetables to satisfy hunger. Now also refers to the richness of the food in the banquet, often metaphorizing the level of the banquet. Dishes refer to the types of food. Nowadays, dishes usually refer to whether the food is beautifully presented and delicious.

2. Dishes refer to the varieties and styles of dishes. Also refers to dishes from different regions.