This is pretty sad, guys, we're debating stuff like this?

Basically, the only difference in any of the terms above depends either on size, creation, or location. If it's big, it's not a ditch, if it was made by water, it's not a bottom or a hollow, or a valley, and depending on where you're at in the nation, it's going to have different names, but as long as you get the idea that it's a low land form, you're set.

Screw the 10 ring, keep them in the zero!!!