There are many different, specific kinds of doughnuts; some use yeast, some don’t, some are filled, some aren’t, they can be sprinkled, sugared, glazed, frosted, soaked in syrup, or just plain, but they’re all still doughnuts. I went to Wikipedia to get more ammo for this comment and realized I didn’t even need to read anything, the picture at the top of the List of Doughnut Varieties page is the same picture used on the Pączki page, lol. You choosing not to eat them the rest of the year has no bearing on their doughnut-ness.