Grinder and hoagie are regional, everywhere that isn't in one of these areas it'll probably just be called a sub.

sandwich pronounced with a g and t. (sangwitch)

Sub

Pennsylvania, so yes, it is a hoagie. I've made a post about this before. Haha

i call em long pizza

Grinder is for faggots. Hoagie and sub or eat a dick.

Subs, ya fed

We just call them sandwiches.

they're subs ya yankee bastards

Sub, the only time I hear hoagie is when referring to the sub bun. "Grab some hoagie buns for our Italian subs."

Depends how it's made. Subs have the toppings laid flat, hoagies have then folded.

Is it comparable to a generic sandwich? Then it's probably a sub.

Is it more complex and richer? Then it's probably a hoagie.

Similar to soups vs stew, but the line is far more blurry.

Hoagies and subs are not the exact same thing in my mind, although overlapping is a possibility.