Pudding can be regarded as egg yolk custard, or fruit juice can be added to get fruit flavor.

Jelly is jelly.

In terms of ingredients, pudding is more than jelly, and the taste level of pudding is also richer than jelly. But some people think that pudding is too greasy and jelly is refreshing. So it depends on personal preference. People who like to eat are delicious, and people who don't like to eat can always find reasons not to eat.