This is the 767th most frequent Japanese word.
ゼリー
Jelly.
ゼリー is used here to refer to a type of dessert.
このゼリーは、とても甘くておいしいです。
This jelly is very sweet and delicious.
ゼリー is used here to describe a category of soft, easy-to-eat foods.
具合が悪いときは、食べやすいゼリーフードがおすすめです。
When feeling unwell, jelly foods that are easy to eat are recommended.
ゼリー is used here in a context suggesting a substance used in experiments.