What Do I Do If I Get This Job?
Jobs & Education1 min ago
No best answer has yet been selected by emmagleb. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.The difference between the two is one of visibility.
There's an official figure somewhere (meteorologically speaking) whereby, if visibility falls below a certain distance, mist is classified as fog.
Can't remember the figure - something like 100m - though I'm sure this will vary around the world according to which meteorological agency you're dealing with.