They are all breads. Waffles have a higher fat content. American pancakes should have butter milk in them and must have baking powder so they rise. American pancakes usually don’t have savory versions like crepes or Asian onion pancakes. I’m sure there’s a savory regional out there.
While the pancake itself is never savory you find pancakes in savory American stuff often enough. The two egg breakfast with meat and pancakes; pancakes used as buns for breakfast sandwich a la the McGriddle. And given the ubiquity of chicken and waffles I would imagine someone has swapped out the waffles for pancakes on a whim.
