“Starch” isn’t a plant categorization at all, stupid. In fact, pretty much any source you can find will tell you potatoes are classified as a vegetable, and while most veggies are lower in starch, a great many are considered starchy vegetables, Including peas. A vegetable having starch in it doesn’t make it a starch. That’s like calling Cabbage a fiber instead of a vegetable, because it has a bunch in it.