Learn English – What do you call the cones used to mark a field for sport activities

I think it depends on what was boiled in them. For many things (meats especially) it is the broth, but I know when my father boiled potatoes, the water left over was just called potato water. I don't think there is a universal word in English for it.

In American English, it would usually be called a convenience store.

A convenience store is a small retail business that stocks a range of everyday items such as groceries, snack foods, confectionery, soft drinks, tobacco products, over-the-counter drugs, toiletries, newspapers, and magazines.