Points to Ponder

Ever wonder why we drive on a parkway and park in a driveway?

Isn't it odd that "to oversee" and "to overlook" mean different things?

But isn't it even odder that "caretaker" and "caregiver" are often used interchangeably, as are "flammable" and "inflammable"?

When someone says "It's all downhill from here," is that a good thing (like in the ease of running downhill) or a bad thing (like going down the tubes)?