On the Food network they boil potatoes, but they poach carrots. They poach turkey, but they boil eggs. They sauté' onions, but they fry eggs in the same pan. Likewise, they fry hash browns, but they sauté' onions in the same pan before adding the potatoes.
I can go on for days.
I have no answers, just pointing out that boiled carrots and poached eggs are also things.
Boiling, poaching and blanching all have to do with how long something is immersed in boiling water, for instance. (I think, and those definitions may also subtly change with the food item.)