Both Yoghurt and Curd are milk-based products, but their end products are not the same because different processes are applied during their preparation. Both yogurt and curd are sweet when you taste them. However, there are some differences between them. The first difference will be on how they are prepared. Yogurt is a milk-based product, and it is made by the action of bacteria like streptococcus and Lactobacillus bulgaricus on liquid milk to metabolize a particular sugar called lactose, which is present in the milk.
The effect of these bacteria, together with other processes are what lead to the production of yogurt. Curd, on the other hand, is also a milk-based product and is gotten through the process of coagulation. Liquid milk is changed into solid by adding acidic edibles like lime juice. Another difference is that yogurts can be mixed with fruits and another flavoring, while curd doesn't contain flavoring